Merge pull request #606 from tj-actions/fix/bug-using-invalid-fetch-depth

fix: bug using invalid fetch-depth

.github/workflows/manual-test.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout

.github/workflows/test.yml

@@ -30,7 +30,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout
@@ -70,7 +70,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
     steps:
       - name: Checkout into dir1
         uses: actions/checkout@v3
@@ -126,11 +126,48 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout to branch
         uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Run changed-files with similar base and commit sha
+        id: changed-files
+        continue-on-error: true
+        uses: ./
+        with:
+          base_sha: d1c0ee4
+          sha: d1c0ee4
+
+      - name: Exit with 1 if no error is raised
+        if: steps.changed-files.outcome != 'failure'
+        run: |
+          echo "Expected: (failure) got ${{ steps.changed-files.outcome }}"
+          exit 1
+
+      - name: Show output
+        run: |
+          echo '${{ toJSON(steps.changed-files.outputs) }}'
+        shell:
+          bash
+
+  test-single-commit-history:
+    name: Test changed-files single commit history
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      fail-fast: false
+      max-parallel: 4
+      matrix:
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+
+    steps:
+      - name: Checkout to branch
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
 
       - name: Run changed-files with a single commit history
         id: changed-files
@@ -149,7 +186,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout to branch
@@ -201,7 +238,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout to branch
@@ -253,7 +290,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
+        platform: [ubuntu-latest, ubuntu-22.04, windows-latest, macos-latest, macos-11, ubuntu-18.04, windows-2022]
 
     steps:
       - name: Checkout
@@ -296,15 +333,25 @@ jobs:
         id: changed-files-dir-names
         uses: ./
         with:
+          base_sha: d1c0ee4
+          sha: 4d04215
           dir_names: "true"
       - name: Show output
         run: |
           echo '${{ toJSON(steps.changed-files-dir-names.outputs) }}'
         shell:
           bash
+      - name: Check dir_names output
+        if: "!contains(steps.changed-files-dir-names.outputs.all_changed_files, 'test')"
+        run: |
+          echo "Invalid output: Expected to include (test) got (${{ steps.changed-files-dir-names.outputs.all_changed_files }})"
+          exit 1
+        shell:
+          bash
       - name: Run changed-files since 2022-08-19
         id: changed-files-since
         uses: ./
+        continue-on-error: true
         with:
           since: "2022-08-19"
       - name: Show output
@@ -315,8 +362,9 @@ jobs:
       - name: Run changed-files until 2022-08-20
         id: changed-files-until
         uses: ./
+        continue-on-error: true
         with:
-          until: "2022-08-21"
+          until: "2022-08-20"
       - name: Show output
         run: |
           echo '${{ toJSON(steps.changed-files-until.outputs) }}'
@@ -784,7 +832,7 @@ jobs:
           bash
       - name: Get branch name
         id: branch-name
-        uses: tj-actions/branch-names@v5
+        uses: tj-actions/branch-names@v6
         if: github.event_name == 'pull_request'
       - uses: nrwl/last-successful-commit-action@v1
         id: last_successful_commit

.github/workflows/update-readme.yml

@@ -17,7 +17,7 @@ jobs:
         uses: tj-actions/remark@v3
 
       - name: Verify Changed files
-        uses: tj-actions/verify-changed-files@v10
+        uses: tj-actions/verify-changed-files@v11
         id: verify_changed_files
         with:
           files: |

HISTORY.md

@@ -1,5 +1,56 @@
 # Changelog
 
+## [v29.0.2](https://github.com/tj-actions/changed-files/tree/v29.0.2) (2022-08-29)
+
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v29.0.1...v29.0.2)
+
+**Implemented enhancements:**
+
+- \[Feature\] Get all changes on current branch against a base\_sha [\#599](https://github.com/tj-actions/changed-files/issues/599)
+
+**Fixed bugs:**
+
+- \[BUG\] dir\_names = true not returning directories with changed files [\#598](https://github.com/tj-actions/changed-files/issues/598)
+
+**Closed issues:**
+
+- Dependency Dashboard [\#27](https://github.com/tj-actions/changed-files/issues/27)
+
+**Merged pull requests:**
+
+- chore: remove unused input [\#603](https://github.com/tj-actions/changed-files/pull/603) ([jackton1](https://github.com/jackton1))
+- chore\(deps\): update tj-actions/branch-names action to v6 [\#602](https://github.com/tj-actions/changed-files/pull/602) ([renovate[bot]](https://github.com/apps/renovate))
+- Upgraded to v29.0.1 [\#601](https://github.com/tj-actions/changed-files/pull/601) ([jackton1](https://github.com/jackton1))
+
+## [v29.0.1](https://github.com/tj-actions/changed-files/tree/v29.0.1) (2022-08-26)
+
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v29.0.0...v29.0.1)
+
+**Merged pull requests:**
+
+- fix: bug with dir name [\#600](https://github.com/tj-actions/changed-files/pull/600) ([jackton1](https://github.com/jackton1))
+- Upgraded to v29.0.0 [\#597](https://github.com/tj-actions/changed-files/pull/597) ([jackton1](https://github.com/jackton1))
+
+## [v29.0.0](https://github.com/tj-actions/changed-files/tree/v29.0.0) (2022-08-23)
+
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v28.0.0...v29.0.0)
+
+**Merged pull requests:**
+
+- chore\(deps\): update tj-actions/glob to v12 [\#596](https://github.com/tj-actions/changed-files/pull/596) ([jackton1](https://github.com/jackton1))
+- chore\(deps\): update tj-actions/verify-changed-files action to v11 [\#595](https://github.com/tj-actions/changed-files/pull/595) ([renovate[bot]](https://github.com/apps/renovate))
+- chore\(deps\): Update tj-actions/glob to v11.1 [\#594](https://github.com/tj-actions/changed-files/pull/594) ([jackton1](https://github.com/jackton1))
+- Upgraded to v28.0.0 [\#592](https://github.com/tj-actions/changed-files/pull/592) ([jackton1](https://github.com/jackton1))
+
+## [v28.0.0](https://github.com/tj-actions/changed-files/tree/v28.0.0) (2022-08-21)
+
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v28...v28.0.0)
+
+**Merged pull requests:**
+
+- chore: update readme [\#591](https://github.com/tj-actions/changed-files/pull/591) ([jackton1](https://github.com/jackton1))
+- Upgraded to v28 [\#589](https://github.com/tj-actions/changed-files/pull/589) ([jackton1](https://github.com/jackton1))
+
 ## [v28](https://github.com/tj-actions/changed-files/tree/v28) (2022-08-21)
 
 [Full Changelog](https://github.com/tj-actions/changed-files/compare/v27...v28)
@@ -13,10 +64,6 @@
 
 - \[BUG\] changes based on last remote commit fail after rebasing [\#546](https://github.com/tj-actions/changed-files/issues/546)
 
-**Closed issues:**
-
-- Dependency Dashboard [\#27](https://github.com/tj-actions/changed-files/issues/27)
-
 **Merged pull requests:**
 
 - feat: add support for using time based filtering. [\#588](https://github.com/tj-actions/changed-files/pull/588) ([jackton1](https://github.com/jackton1))
@@ -723,7 +770,7 @@
 
 ## [v13](https://github.com/tj-actions/changed-files/tree/v13) (2022-02-17)
 
-[Full Changelog](https://github.com/tj-actions/changed-files/compare/v2.0.1...v13)
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v12.2...v13)
 
 **Implemented enhancements:**
 
@@ -742,13 +789,13 @@
 - \[BUG\] wrong result of any\_change output [\#314](https://github.com/tj-actions/changed-files/issues/314)
 - \[BUG\] Investigate possible bug using since\_last\_remote\_commit when force pushing changes. [\#303](https://github.com/tj-actions/changed-files/issues/303)
 
-## [v2.0.1](https://github.com/tj-actions/changed-files/tree/v2.0.1) (2021-12-30)
-
-[Full Changelog](https://github.com/tj-actions/changed-files/compare/v12.2...v2.0.1)
-
 ## [v12.2](https://github.com/tj-actions/changed-files/tree/v12.2) (2021-12-30)
 
-[Full Changelog](https://github.com/tj-actions/changed-files/compare/v12.1...v12.2)
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v2.0.1...v12.2)
+
+## [v2.0.1](https://github.com/tj-actions/changed-files/tree/v2.0.1) (2021-12-30)
+
+[Full Changelog](https://github.com/tj-actions/changed-files/compare/v12.1...v2.0.1)
 
 **Merged pull requests:**
 

README.md

@@ -13,7 +13,7 @@
 
 ## changed-files
 
-Retrieve all changed files and directories relative to the target branch (`pull_request*` based events) or the last remote commit (`push` based event) returning the **absolute path** to all changed files and directories from the project root.
+Retrieve all changed files and directories relative to the target branch (`pull_request*` based events) or the last remote commit (`push` or `pull_request*` based event) returning the **absolute path** to all changed files and directories from the project root.
 
 ## Features
 
@@ -44,7 +44,6 @@ Retrieve all changed files and directories relative to the target branch (`pull_
 > NOTE: :warning:
 >
 > *   **IMPORTANT:** For `push` events you need to include `fetch-depth: 0` **OR** `fetch-depth: 2` depending on your use case.
-> *   When using `persist-credentials: false` with `actions/checkout@v3` you'll need to specify a `token` using the `token` input.
 > *   For monorepos where pulling all the branch history might not be desired, you can omit `fetch-depth` for `pull_request` events.
 > *   For files located in a sub-directory ensure that the pattern specified contains `**/` (globstar) to match any preceding directories or explicitly pass the full path relative to the project root. See: [#314](https://github.com/tj-actions/changed-files/issues/314).
 
@@ -70,7 +69,7 @@ jobs:
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
 
       - name: List all changed files
         run: |
@@ -130,7 +129,6 @@ Support this project with a :star:
 
 |                 Input                  |          type          | required |        default        |                                                                                                                                                          description                                                                                                                                                          |
 |:--------------------------------------:|:----------------------:|:--------:|:---------------------:|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
-|                 token                  |        `string`        | `false`  | `${{ github.token }}` | [GITHUB\_TOKEN](https://docs.github.com/en/free-pro-team@latest/actions/reference/authentication-in-a-workflow#using-the-github_token-in-a-workflow) <br /> or a repo scoped <br /> [Personal Access Token](https://docs.github.com/en/free-pro-team@latest/github/authenticating-to-github/creating-a-personal-access-token) |
 |               separator                |        `string`        | `false`  |         `' '`         |                                                                                                                                              Split character for output strings                                                                                                                                               |
 | include\_all\_old\_new\_renamed\_files |       `boolean`        | `false`  |        `false`        |                                                                                    Include `all_old_new_renamed_files` output. Note this can generate a large output See: [#501](https://github.com/tj-actions/changed-files/issues/501).                                                                                     |
 |          old\_new\_separator           |        `string`        | `false`  |         `','`         |                                                                                                                                        Split character for old and new filename pairs                                                                                                                                         |
@@ -165,11 +163,11 @@ Support this project with a :star:
 
       - name: Get changed files using defaults
         id: changed-files
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
 
       - name: Get changed files using a comma separator
         id: changed-files-comma
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           separator: ","
 
@@ -191,7 +189,7 @@ Support this project with a :star:
 
       - name: Get specific changed files
         id: changed-files-specific
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           files: |
             my-file.txt
@@ -232,14 +230,14 @@ Support this project with a :star:
 
       - name: Use a source file or list of file(s) to populate to files input.
         id: changed-files-specific-source-file
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           files_from_source_file: |
             test/changed-files-list.txt
 
       - name: Use a source file or list of file(s) to populate to files input and optionally specify more files.
         id: changed-files-specific-source-file-and-specify-files
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           files_from_source_file: |
             test/changed-files-list.txt
@@ -248,15 +246,15 @@ Support this project with a :star:
 
       - name: Use a different commit SHA
         id: changed-files-custom-sha
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           sha: ${{ github.event.pull_request.head.sha }}
 
       - name: Use a different base SHA
         id: changed-files-custom-base-sha
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
-          base_sha: "2096ed0"
+          base_sha: ${{ github.event.pull_request.base.sha }}
           
       - name: Checkout into dir1
         uses: actions/checkout@v3
@@ -266,7 +264,7 @@ Support this project with a :star:
 
       - name: Run changed-files with defaults on the dir1
         id: changed-files-for-dir1
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           path: dir1
 
@@ -278,19 +276,19 @@ Support this project with a :star:
 
       - name: Run changed-files using the last commit on the remote branch
         id: changed-files-since-last-remote-commit
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           since_last_remote_commit: "true"
       
       - name: Run changed-files using the fork point of a pull request
         id: changed-files-fork-point
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           use_fork_point: "true"
           
       - name: Run changed-files with quotepath disabled
         id: changed-files-quotepath
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           quotepath: "false"
       
@@ -312,7 +310,7 @@ Support this project with a :star:
 
       - name: Run changed-files with the commit of the last successful test workflow run
         id: changed-files-base-sha-push
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           base_sha: ${{ steps.last_successful_commit_push.outputs.commit_hash }}
 
@@ -333,32 +331,32 @@ Support this project with a :star:
       - name: Run changed-files with the commit of the last successful test workflow run on main
         if: github.event_name == 'pull_request'
         id: changed-files-base-sha-pull-request
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           base_sha: ${{ steps.last_successful_commit_pull_request.outputs.commit_hash }}
 
       - name: Run changed-files with dir_names
         id: changed-files-dir-names
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           dir_names: "true"
       
       # All outputs are JSON formatted arrays and can be used in other actions and matrix compatible jobs.
       - name: Run changed-files with json output
         id: changed-files-json
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           json: "true"
 
       - name: Run changed-files since 2022-08-19
         id: changed-files-since
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           since: "2022-08-19"
 
       - name: Run changed-files until 2022-08-20
         id: changed-files-until
-        uses: tj-actions/changed-files@v28
+        uses: tj-actions/changed-files@v29.0.2
         with:
           until: "2022-08-20"
 ```

action.yml

@@ -3,10 +3,6 @@ description: Get all Added, Copied, Modified, Deleted, Renamed, Type changed, Un
 author: tj-actions
 
 inputs:
-  token:
-    description: "Github token"
-    required: false
-    default: ${{ github.token }}
   separator:
     description: "Split character for output strings"
     required: false
@@ -199,11 +195,10 @@ runs:
         # https://github.community/t/input-variable-name-is-not-available-in-composite-run-steps/127611
         INPUT_SHA: ${{ steps.sha.outputs.sha }}
         INPUT_BASE_SHA: ${{ steps.base-sha.outputs.base_sha }}
-        INPUT_TOKEN: ${{ inputs.token }}
         INPUT_PATH: ${{ inputs.path }}
         INPUT_USE_FORK_POINT: ${{ inputs.use_fork_point }}
     - name: Glob match
-      uses: tj-actions/glob@v10
+      uses: tj-actions/glob@v13
       id: glob
       with:
         files: ${{ inputs.files }}

diff-sha.sh

@@ -23,7 +23,7 @@ function __version() {
   echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }';
 }
 
-GIT_VERSION=$(git --version | awk '{print $3}'); exit_status=$?
+GIT_VERSION=$(git --version | awk '{print $3}') && exit_status=$? || exit_status=$?
 
 if [[ $exit_status -ne 0 ]]; then
   echo "::error::git not installed"
@@ -40,12 +40,13 @@ fi
 echo "::debug::Getting HEAD SHA..."
 
 if [[ -z $INPUT_SHA ]]; then
-  CURRENT_SHA=$(git rev-list -n 1 "HEAD" 2>&1); exit_status=$?
+  CURRENT_SHA=$(git rev-list -n 1 "HEAD" 2>&1) && exit_status=$? || exit_status=$?
 else
   CURRENT_SHA=$INPUT_SHA; exit_status=$?
 fi
 
-git rev-parse --quiet --verify "$CURRENT_SHA^{commit}" 1>/dev/null 2>&1; exit_status=$?
+echo "::debug::Verifying the current commit SHA: $CURRENT_SHA"
+git rev-parse --quiet --verify "$CURRENT_SHA^{commit}" 1>/dev/null 2>&1 && exit_status=$? || exit_status=$?
 
 if [[ $exit_status -ne 0 ]]; then
   echo "::error::Unable to locate the current sha: $CURRENT_SHA"
@@ -62,8 +63,10 @@ if [[ -z $GITHUB_BASE_REF ]]; then
   echo "::debug::GITHUB_BASE_REF unset using $TARGET_BRANCH..."
 
   if [[ -z $INPUT_BASE_SHA ]]; then
+    git fetch --no-tags -u --progress origin --depth=2 "${TARGET_BRANCH}":"${TARGET_BRANCH}" && exit_status=$? || exit_status=$?
+
     if [[ $(git rev-list --count "HEAD") -gt 1 ]]; then
-      PREVIOUS_SHA=$(git rev-parse "@~" 2>&1); exit_status=$?
+      PREVIOUS_SHA=$(git rev-parse "@~1" 2>&1) && exit_status=$? || exit_status=$?
       echo "::debug::Previous SHA: $PREVIOUS_SHA"
     else
       PREVIOUS_SHA=$CURRENT_SHA; exit_status=$?
@@ -73,12 +76,13 @@ if [[ -z $GITHUB_BASE_REF ]]; then
     fi
   else
     PREVIOUS_SHA=$INPUT_BASE_SHA; exit_status=$?
-    TARGET_BRANCH=$(git name-rev --name-only "$PREVIOUS_SHA" 2>&1); exit_status=$?
+    TARGET_BRANCH=$(git name-rev --name-only "$PREVIOUS_SHA" 2>&1) && exit_status=$? || exit_status=$?
     echo "::debug::Previous SHA: $PREVIOUS_SHA"
     echo "::debug::Target branch: $TARGET_BRANCH"
   fi
 
-  git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1; exit_status=$?
+  echo "::debug::Verifying the previous commit SHA: $PREVIOUS_SHA"
+  git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1 && exit_status=$? || exit_status=$?
 
   if [[ $exit_status -ne 0 ]]; then
     echo "::error::Unable to locate the previous sha: $PREVIOUS_SHA"
@@ -94,24 +98,24 @@ else
   if [[ -z $INPUT_BASE_SHA ]]; then
     if [[ "$INPUT_USE_FORK_POINT" == "true" ]]; then
       echo "::debug::Getting fork point..."
-      git fetch --no-tags -u --progress origin "${TARGET_BRANCH}":"${TARGET_BRANCH}"; exit_status=$?
-      PREVIOUS_SHA=$(git merge-base --fork-point "${TARGET_BRANCH}" "$(git name-rev --name-only "$CURRENT_SHA")"); exit_status=$?
+      git fetch --no-tags -u --progress origin "${TARGET_BRANCH}":"${TARGET_BRANCH}" && exit_status=$? || exit_status=$?
+      PREVIOUS_SHA=$(git merge-base --fork-point "${TARGET_BRANCH}" "$(git name-rev --name-only "$CURRENT_SHA")") && exit_status=$? || exit_status=$?
       echo "::debug::Previous SHA: $PREVIOUS_SHA"
     else
-      git fetch --no-tags -u --progress origin --depth=1 "${TARGET_BRANCH}":"${TARGET_BRANCH}"; exit_status=$?
-      PREVIOUS_SHA=$(git rev-list -n 1 "${TARGET_BRANCH}" 2>&1); exit_status=$?
+      git fetch --no-tags -u --progress origin --depth=1 "${TARGET_BRANCH}":"${TARGET_BRANCH}" && exit_status=$? || exit_status=$?
+      PREVIOUS_SHA=$(git rev-list -n 1 "${TARGET_BRANCH}" 2>&1) && exit_status=$? || exit_status=$?
       echo "::debug::Previous SHA: $PREVIOUS_SHA"
     fi
   else
-    git fetch --no-tags -u --progress origin --depth=1 "$(git rev-parse --verify "$INPUT_BASE_SHA")"; exit_status=$?
+    git fetch --no-tags -u --progress origin --depth=1 "$(git rev-parse --verify "$INPUT_BASE_SHA")" && exit_status=$? || exit_status=$?
     PREVIOUS_SHA=$INPUT_BASE_SHA
-    TARGET_BRANCH=$(git name-rev --name-only "$PREVIOUS_SHA" 2>&1); exit_status=$?
+    TARGET_BRANCH=$(git name-rev --name-only "$PREVIOUS_SHA" 2>&1) && exit_status=$? || exit_status=$?
     echo "::debug::Previous SHA: $PREVIOUS_SHA"
     echo "::debug::Target branch: $TARGET_BRANCH"
   fi
 
-  echo "::debug::Verifying commit SHA..."
-  git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1; exit_status=$?
+  echo "::debug::Verifying the previous commit SHA: $PREVIOUS_SHA"
+  git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1 && exit_status=$? || exit_status=$?
 
   if [[ $exit_status -ne 0 ]]; then
     echo "::error::Unable to locate the previous sha: $PREVIOUS_SHA"
@@ -122,6 +126,7 @@ fi
 
 if [[ -n "$PREVIOUS_SHA" && -n "$CURRENT_SHA" && "$PREVIOUS_SHA" == "$CURRENT_SHA" && "$INITIAL_COMMIT" == "false" ]]; then
   echo "::error::Similar commit hashes detected: previous sha: $PREVIOUS_SHA is equivalent to the current sha: $CURRENT_SHA"
+  echo "::error::You seem to be missing 'fetch-depth: 0' or 'fetch-depth: 2'. See https://github.com/tj-actions/changed-files#usage"
   exit 1
 fi