From 1f907ee3bb9623c6a98b8c9585d2d4cb1fb9d707 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 13:07:33 -0600
Subject: [PATCH 01/10] feat: make since_last_remote the default for push
 events

---
 action.yml | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/action.yml b/action.yml
index 28a4e1a7cee..70c902b743a 100644
--- a/action.yml
+++ b/action.yml
@@ -50,10 +50,6 @@ inputs:
   base_sha:
     description: "Specify a base commit SHA on used for comparing changes"
     required: false
-  since_last_remote_commit:
-    description: "Use the last commit on the remote branch as the base_sha for push event."
-    required: false
-    default: "false"
   since:
     description: "Get changed files for commits whose timestamp is older than the given time"
     required: false
@@ -160,7 +156,7 @@ runs:
           echo "::set-output name=base_sha::$BASE_SHA"
         elif [[ -n "${{ inputs.base_sha }}" ]]; then
           echo "::set-output name=base_sha::${{ inputs.base_sha }}"
-        elif [[ "${{ inputs.since_last_remote_commit }}" == "true" ]]; then
+        else
           LAST_REMOTE_COMMIT="${{ github.event.before }}"
           if [[ -z "$LAST_REMOTE_COMMIT" || "$LAST_REMOTE_COMMIT" == "0000000000000000000000000000000000000000" ]]; then
             LAST_REMOTE_COMMIT=$(git rev-parse $(git branch -r --sort=-committerdate | head -1))

From 26361016d977cbec6629ee49f763d41da14746f9 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 17:49:47 -0600
Subject: [PATCH 02/10] Fixed test.

---
 action.yml      | 51 +++++++++++++++++++------------------------------
 get-base-sha.sh | 34 +++++++++++++++++++++++++++++++++
 get-sha.sh      | 24 +++++++++++++++++++++++
 3 files changed, 78 insertions(+), 31 deletions(-)
 create mode 100644 get-base-sha.sh
 create mode 100644 get-sha.sh

diff --git a/action.yml b/action.yml
index 70c902b743a..00bac98a62d 100644
--- a/action.yml
+++ b/action.yml
@@ -147,40 +147,31 @@ runs:
   using: "composite"
   steps:
     - run: |
-        # "Set base sha..."
-        if [[ -n "${{ inputs.since }}" ]]; then
-          BASE_SHA=$(git log --format="%H" --date=local --since="${{ inputs.since }}" --reverse | head -n 1)
-          if [[ -z "$BASE_SHA" ]]; then
-            echo "::warning::The BASE_SHA for date '${{ inputs.since }}' couldn't be determined."
-          fi
-          echo "::set-output name=base_sha::$BASE_SHA"
-        elif [[ -n "${{ inputs.base_sha }}" ]]; then
-          echo "::set-output name=base_sha::${{ inputs.base_sha }}"
-        else
-          LAST_REMOTE_COMMIT="${{ github.event.before }}"
-          if [[ -z "$LAST_REMOTE_COMMIT" || "$LAST_REMOTE_COMMIT" == "0000000000000000000000000000000000000000" ]]; then
-            LAST_REMOTE_COMMIT=$(git rev-parse $(git branch -r --sort=-committerdate | head -1))
-          fi
-          if [[ "${{ inputs.sha }}" == "$LAST_REMOTE_COMMIT" ]]; then
-            LAST_REMOTE_COMMIT=$(git rev-parse "${{ inputs.sha }}^1")
-          fi
-          echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
-        fi
+        # "Calculate the base sha..."
+        bash $GITHUB_ACTION_PATH/get-base-sha.sh
       id: base-sha
       shell: bash
+      env:
+        GITHUB_WORKSPACE: ${{ github.workspace }}
+        GITHUB_EVENT_BEFORE: ${{ github.event.before }}
+        # INPUT_<VARIABLE_NAME> is not available in Composite run steps
+        # https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#example-specifying-inputs
+        INPUT_SINCE: ${{ inputs.since }}
+        INPUT_BASE_SHA: ${{ inputs.base_sha }}
+        INPUT_SHA: ${{ inputs.sha }}
+        INPUT_PATH: ${{ inputs.path }}
     - run: |
-        # "Set the sha..."
-        if [[ -n "${{ inputs.until }}" ]]; then
-          SHA=$(git log -1 --format="%H" --date=local --until="${{ inputs.until }}")
-          if [[ -z "$SHA" ]]; then
-            echo "::warning::The SHA for date '${{ inputs.until }}' couldn't be determined, falling back to the current sha."
-          fi
-          echo "::set-output name=sha::$SHA"
-        else
-          echo "::set-output name=sha::${{ inputs.sha }}"
-        fi
+        # "Calculate the sha..."
+        bash $GITHUB_ACTION_PATH/get-sha.sh
       id: sha
       shell: bash
+      env:
+        GITHUB_WORKSPACE: ${{ github.workspace }}
+        # INPUT_<VARIABLE_NAME> is not available in Composite run steps
+        # https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#example-specifying-inputs
+        INPUT_UNTIL: ${{ inputs.until }}
+        INPUT_SHA: ${{ inputs.sha }}
+        INPUT_PATH: ${{ inputs.path }}
     - run: |
         # "Calculating the previous and current SHA..."
         bash $GITHUB_ACTION_PATH/diff-sha.sh
@@ -191,7 +182,6 @@ runs:
         GITHUB_REPOSITORY: ${{ github.repository }}
         GITHUB_BASE_REF: ${{ github.base_ref }}
         GITHUB_HEAD_REF: ${{ github.head_ref }}
-        GITHUB_ACTION_PATH: ${{ github.action_path }}
         GITHUB_WORKSPACE: ${{ github.workspace }}
         GITHUB_PULL_REQUEST_BASE_SHA: ${{ github.event.pull_request.base.sha }}
         # INPUT_<VARIABLE_NAME> is not available in Composite run steps
@@ -220,7 +210,6 @@ runs:
       id: changed-files
       shell: bash
       env:
-        GITHUB_ACTION_PATH: ${{ github.action_path }}
         GITHUB_WORKSPACE: ${{ github.workspace }}
         # INPUT_<VARIABLE_NAME> is not available in Composite run steps
         # https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#example-specifying-inputs
diff --git a/get-base-sha.sh b/get-base-sha.sh
new file mode 100644
index 00000000000..9cd65e77a41
--- /dev/null
+++ b/get-base-sha.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+set -eu
+
+if [[ -n $INPUT_PATH ]]; then
+  REPO_DIR="$GITHUB_WORKSPACE/$INPUT_PATH"
+
+  echo "Resolving repository path: $REPO_DIR"
+  if [[ ! -d "$REPO_DIR" ]]; then
+    echo "::error::Invalid repository path: $REPO_DIR"
+    exit 1
+  fi
+  cd "$REPO_DIR"
+fi
+
+if [[ -n "$INPUT_SINCE" ]]; then
+  BASE_SHA=$(git log --format="%H" --date=local --since="$INPUT_SINCE" --reverse | head -n 1)
+  if [[ -z "$BASE_SHA" ]]; then
+    echo "::warning::The BASE_SHA for date '$INPUT_SINCE' couldn't be determined."
+  fi
+  echo "::set-output name=base_sha::$BASE_SHA"
+elif [[ -n "$INPUT_BASE_SHA" ]]; then
+  echo "::set-output name=base_sha::$INPUT_BASE_SHA"
+else
+  LAST_REMOTE_COMMIT="$GITHUB_EVENT_BEFORE"
+
+  if [[ -z "$LAST_REMOTE_COMMIT" || "$LAST_REMOTE_COMMIT" == "0000000000000000000000000000000000000000" ]]; then
+    LAST_REMOTE_COMMIT=$(git rev-parse "$(git branch -r --sort=-committerdate | head -1)")
+  fi
+  if [[ "$INPUT_SHA" == "$LAST_REMOTE_COMMIT" ]]; then
+    LAST_REMOTE_COMMIT=$(git rev-parse "$INPUT_SHA^1")
+  fi
+  echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
+fi
\ No newline at end of file
diff --git a/get-sha.sh b/get-sha.sh
new file mode 100644
index 00000000000..e94a9d79ce6
--- /dev/null
+++ b/get-sha.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -eu
+
+if [[ -n $INPUT_PATH ]]; then
+  REPO_DIR="$GITHUB_WORKSPACE/$INPUT_PATH"
+
+  echo "Resolving repository path: $REPO_DIR"
+  if [[ ! -d "$REPO_DIR" ]]; then
+    echo "::error::Invalid repository path: $REPO_DIR"
+    exit 1
+  fi
+  cd "$REPO_DIR"
+fi
+
+if [[ -n "$INPUT_UNTIL" ]]; then
+  SHA=$(git log -1 --format="%H" --date=local --until="$INPUT_UNTIL")
+  if [[ -z "$SHA" ]]; then
+    echo "::warning::The SHA for date '$INPUT_UNTIL' couldn't be determined, falling back to the current sha."
+  fi
+  echo "::set-output name=sha::$SHA"
+else
+  echo "::set-output name=sha::$INPUT_SHA"
+fi
\ No newline at end of file

From 068970bff87f5381f963ac40771d21b5c38cd46d Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 18:12:07 -0600
Subject: [PATCH 03/10] reorder inputs

---
 action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index 00bac98a62d..bef048b2b7d 100644
--- a/action.yml
+++ b/action.yml
@@ -195,11 +195,11 @@ runs:
       with:
         files: ${{ inputs.files }}
         files-separator: ${{ inputs.files_separator }}
-        escape-paths: true
         excluded-files: ${{ inputs.files_ignore }}
         excluded-files-separator: ${{ inputs.files_ignore_separator }}
         files-from-source-file: ${{ inputs.files_from_source_file }}
         excluded-files-from-source-file: ${{ inputs.files_ignore_from_source_file}}
+        escape-paths: true
         working-directory: ${{ inputs.path }}
         base-sha: ${{ steps.changed-files-diff-sha.outputs.previous_sha }}
         sha: ${{ steps.changed-files-diff-sha.outputs.current_sha }}

From 0ec94592d4b5ce8d6553940302e21833bed39dc9 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 18:30:52 -0600
Subject: [PATCH 04/10] Renamed entrypoint.sh -> get-changed-paths.sh

---
 .github/workflows/test.yml            | 8 ++++----
 action.yml                            | 2 +-
 entrypoint.sh => get-changed-paths.sh | 0
 3 files changed, 5 insertions(+), 5 deletions(-)
 rename entrypoint.sh => get-changed-paths.sh (100%)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f0a49b529b7..93a6b334468 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -522,10 +522,10 @@ jobs:
         uses: ./
         with:
           files: |
-            entrypoint.sh
+            get-changed-paths.sh
             *.sh
       - name: Verify all_changed_files files has no duplicates
-        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_changed_files, 'entrypoint.sh')
+        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_changed_files, 'get-changed-paths.sh')
         run: |
           ALL_CHANGED_FILES=(${{ steps.changed-files-specific-duplicate-output.outputs.all_changed_files }})
           UNIQUE_ALL_CHANGED_FILES=$(echo "$ALL_CHANGED_FILES" | tr ' ' '\n' | sort -u | xargs)
@@ -537,7 +537,7 @@ jobs:
         shell:
           bash
       - name: Verify all_changed_and_modified_files files has no duplicates
-        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_changed_and_modified_files, 'entrypoint.sh')
+        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_changed_and_modified_files, 'get-changed-paths.sh')
         run: |
           ALL_CHANGED_AND_MODIFIED_FILES=(${{ steps.changed-files-specific-duplicate-output.outputs.all_changed_and_modified_files }})
           UNIQUE_ALL_CHANGED_AND_MODIFIED_FILES=$(echo "$ALL_CHANGED_AND_MODIFIED_FILES" | tr ' ' '\n' | sort -u | xargs)
@@ -549,7 +549,7 @@ jobs:
         shell:
           bash
       - name: Verify all_modified_files files has no duplicates
-        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_modified_files, 'entrypoint.sh')
+        if: contains(steps.changed-files-specific-duplicate-output.outputs.all_modified_files, 'get-changed-paths.sh')
         run: |
           ALL_MODIFIED_FILES=(${{ steps.changed-files-specific-duplicate-output.outputs.all_modified_files }})
           UNIQUE_ALL_MODIFIED_FILES=$(echo "$ALL_MODIFIED_FILES" | tr ' ' '\n' | sort -u | xargs)
diff --git a/action.yml b/action.yml
index bef048b2b7d..92c21e97d86 100644
--- a/action.yml
+++ b/action.yml
@@ -206,7 +206,7 @@ runs:
         include-deleted-files: true
         separator: "|"
     - run: |
-        bash $GITHUB_ACTION_PATH/entrypoint.sh
+        bash $GITHUB_ACTION_PATH/get-changed-paths.sh
       id: changed-files
       shell: bash
       env:
diff --git a/entrypoint.sh b/get-changed-paths.sh
similarity index 100%
rename from entrypoint.sh
rename to get-changed-paths.sh

From b6b72a44c83eb61e43b7096bc24175f820d75829 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 18:35:01 -0600
Subject: [PATCH 05/10] Updated to use INPUT_HAS_CUSTOM_PATTERNS.

---
 action.yml           | 1 +
 get-changed-paths.sh | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index 92c21e97d86..4c548769416 100644
--- a/action.yml
+++ b/action.yml
@@ -227,6 +227,7 @@ runs:
         INPUT_DIFF_RELATIVE: ${{ inputs.diff_relative }}
         INPUT_DIR_NAMES: ${{ inputs.dir_names }}
         INPUT_JSON: ${{ inputs.json }}
+        INPUT_HAS_CUSTOM_PATTERNS: ${{ steps.glob.outputs.has-custom-patterns }}
 
 branding:
   icon: file-text
diff --git a/get-changed-paths.sh b/get-changed-paths.sh
index 6866f6321e7..fe63604b187 100755
--- a/get-changed-paths.sh
+++ b/get-changed-paths.sh
@@ -81,7 +81,7 @@ echo "Retrieving changes between $INPUT_PREVIOUS_SHA ($INPUT_TARGET_BRANCH) →
 
 echo "Getting diff..."
 
-if [[ -z "$INPUT_FILES_PATTERN_FILE" ]]; then
+if [[ "$INPUT_HAS_CUSTOM_PATTERNS" == "false" ]]; then
   if [[ "$INPUT_JSON" == "false" ]]; then
     ADDED=$(get_diff "$INPUT_PREVIOUS_SHA" "$INPUT_CURRENT_SHA" A | awk -v d="$INPUT_SEPARATOR" '{s=(NR==1?s:s d)$0}END{print s}')
     COPIED=$(get_diff "$INPUT_PREVIOUS_SHA" "$INPUT_CURRENT_SHA" C | awk -v d="$INPUT_SEPARATOR" '{s=(NR==1?s:s d)$0}END{print s}')

From 2c4c729f2a74ebf2b1360bb395d3ce43d826bb84 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 18:59:22 -0600
Subject: [PATCH 06/10] revert removing since-last-remote-commit input

---
 action.yml      | 5 +++++
 get-base-sha.sh | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index 4c548769416..b1824a0f55f 100644
--- a/action.yml
+++ b/action.yml
@@ -50,6 +50,10 @@ inputs:
   base_sha:
     description: "Specify a base commit SHA on used for comparing changes"
     required: false
+  since_last_remote_commit:
+    description: "Use the last commit on the remote branch as the base_sha for push event."
+    required: false
+    default: "false"
   since:
     description: "Get changed files for commits whose timestamp is older than the given time"
     required: false
@@ -160,6 +164,7 @@ runs:
         INPUT_BASE_SHA: ${{ inputs.base_sha }}
         INPUT_SHA: ${{ inputs.sha }}
         INPUT_PATH: ${{ inputs.path }}
+        INPUT_SINCE_LAST_REMOTE_COMMIT: ${{ inputs.since_last_remote_commit }}
     - run: |
         # "Calculate the sha..."
         bash $GITHUB_ACTION_PATH/get-sha.sh
diff --git a/get-base-sha.sh b/get-base-sha.sh
index 9cd65e77a41..e94240431d3 100644
--- a/get-base-sha.sh
+++ b/get-base-sha.sh
@@ -21,7 +21,7 @@ if [[ -n "$INPUT_SINCE" ]]; then
   echo "::set-output name=base_sha::$BASE_SHA"
 elif [[ -n "$INPUT_BASE_SHA" ]]; then
   echo "::set-output name=base_sha::$INPUT_BASE_SHA"
-else
+elif [[ "$INPUT_SINCE_LAST_REMOTE_COMMIT" == "true" ]]; then
   LAST_REMOTE_COMMIT="$GITHUB_EVENT_BEFORE"
 
   if [[ -z "$LAST_REMOTE_COMMIT" || "$LAST_REMOTE_COMMIT" == "0000000000000000000000000000000000000000" ]]; then

From 5485a02af8ec905520937e24e653b443047da143 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 19:08:58 -0600
Subject: [PATCH 07/10] Updated to use the last remote commit by default.

---
 action.yml  |  1 +
 diff-sha.sh | 24 +++++++++---------------
 2 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/action.yml b/action.yml
index b1824a0f55f..47f6744c7fe 100644
--- a/action.yml
+++ b/action.yml
@@ -189,6 +189,7 @@ runs:
         GITHUB_HEAD_REF: ${{ github.head_ref }}
         GITHUB_WORKSPACE: ${{ github.workspace }}
         GITHUB_PULL_REQUEST_BASE_SHA: ${{ github.event.pull_request.base.sha }}
+        GITHUB_EVENT_BEFORE: ${{ github.event.before }}
         # INPUT_<VARIABLE_NAME> is not available in Composite run steps
         # https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#example-specifying-inputs
         INPUT_SHA: ${{ steps.sha.outputs.sha }}
diff --git a/diff-sha.sh b/diff-sha.sh
index 9116f3ba3fd..2269749302d 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -57,30 +57,24 @@ else
 fi
 
 if [[ -z $GITHUB_BASE_REF ]]; then
-  TARGET_BRANCH=${GITHUB_REF/refs\/heads\//}
-  CURRENT_BRANCH=$TARGET_BRANCH
-
-  echo "::debug::GITHUB_BASE_REF unset using $TARGET_BRANCH..."
+  TARGET_BRANCH=${GITHUB_REF/refs\/heads\//} && exit_status=$? || exit_status=$?
+  CURRENT_BRANCH=$TARGET_BRANCH && exit_status=$? || exit_status=$?
 
   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 "@~1" 2>&1) && exit_status=$? || exit_status=$?
-      echo "::debug::Previous SHA: $PREVIOUS_SHA"
-    else
-      PREVIOUS_SHA=$CURRENT_SHA; exit_status=$?
+    PREVIOUS_SHA=$GITHUB_EVENT_BEFORE
+    if [[ "$PREVIOUS_SHA" == "$CURRENT_SHA" ]]; then
       INITIAL_COMMIT="true"
       echo "::debug::Initial commit detected"
-      echo "::debug::Previous SHA: $PREVIOUS_SHA"
     fi
   else
-    PREVIOUS_SHA=$INPUT_BASE_SHA; exit_status=$?
+    PREVIOUS_SHA=$INPUT_BASE_SHA
     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: $TARGET_BRANCH"
+    CURRENT_BRANCH=$TARGET_BRANCH
   fi
 
+  echo "::debug::Target branch $TARGET_BRANCH..."
+  echo "::debug::Current branch $CURRENT_BRANCH..."
+
   echo "::debug::Verifying the previous commit SHA: $PREVIOUS_SHA"
   git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1 && exit_status=$? || exit_status=$?
 

From de772eb038d30fb955fda775c66e2773009d53c8 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 19:11:18 -0600
Subject: [PATCH 08/10] added empty line

---
 get-base-sha.sh | 2 +-
 get-sha.sh      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/get-base-sha.sh b/get-base-sha.sh
index e94240431d3..c2fcee3c283 100644
--- a/get-base-sha.sh
+++ b/get-base-sha.sh
@@ -31,4 +31,4 @@ elif [[ "$INPUT_SINCE_LAST_REMOTE_COMMIT" == "true" ]]; then
     LAST_REMOTE_COMMIT=$(git rev-parse "$INPUT_SHA^1")
   fi
   echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
-fi
\ No newline at end of file
+fi
diff --git a/get-sha.sh b/get-sha.sh
index e94a9d79ce6..ede5529c090 100644
--- a/get-sha.sh
+++ b/get-sha.sh
@@ -21,4 +21,4 @@ if [[ -n "$INPUT_UNTIL" ]]; then
   echo "::set-output name=sha::$SHA"
 else
   echo "::set-output name=sha::$INPUT_SHA"
-fi
\ No newline at end of file
+fi

From ef1134dca7db98126adfe9ad0a47dde38e56c6af Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 19:33:05 -0600
Subject: [PATCH 09/10] update to handle the default event.before

---
 diff-sha.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/diff-sha.sh b/diff-sha.sh
index 2269749302d..988c598a1f1 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -62,6 +62,14 @@ if [[ -z $GITHUB_BASE_REF ]]; then
 
   if [[ -z $INPUT_BASE_SHA ]]; then
     PREVIOUS_SHA=$GITHUB_EVENT_BEFORE
+
+    if [[ -z "$PREVIOUS_SHA" || "$PREVIOUS_SHA" == "0000000000000000000000000000000000000000" ]]; then
+      PREVIOUS_SHA=$(git rev-parse "$(git branch -r --sort=-committerdate | head -1)")
+    fi
+    if [[ "$INPUT_SHA" == "$PREVIOUS_SHA" ]]; then
+      PREVIOUS_SHA=$(git rev-parse "$INPUT_SHA^1")
+    fi
+
     if [[ "$PREVIOUS_SHA" == "$CURRENT_SHA" ]]; then
       INITIAL_COMMIT="true"
       echo "::debug::Initial commit detected"

From 05f9744e418ca2abb86747d06d248d5416fff147 Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Sat, 24 Sep 2022 19:33:47 -0600
Subject: [PATCH 10/10] remove unused code

---
 diff-sha.sh | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/diff-sha.sh b/diff-sha.sh
index 988c598a1f1..434f2899c6b 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -66,9 +66,6 @@ if [[ -z $GITHUB_BASE_REF ]]; then
     if [[ -z "$PREVIOUS_SHA" || "$PREVIOUS_SHA" == "0000000000000000000000000000000000000000" ]]; then
       PREVIOUS_SHA=$(git rev-parse "$(git branch -r --sort=-committerdate | head -1)")
     fi
-    if [[ "$INPUT_SHA" == "$PREVIOUS_SHA" ]]; then
-      PREVIOUS_SHA=$(git rev-parse "$INPUT_SHA^1")
-    fi
 
     if [[ "$PREVIOUS_SHA" == "$CURRENT_SHA" ]]; then
       INITIAL_COMMIT="true"