diff --git a/README.md b/README.md
index c9902b6..4c5b14d 100644
--- a/README.md
+++ b/README.md
@@ -63,8 +63,13 @@ Example showing all options:
           branch: ${{ github.head_ref || github.ref_name }}
           empty: true
           file_pattern: '*.txt *.md *.json *.hcl'
+          repository: 'path/to/subdir'
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
 ```
 
+The `repository` input is optional. When set, it must be a relative path under
+`$GITHUB_WORKSPACE` pointing to the git repository to operate on. Defaults to
+the root of the repository (`.`).
+
 See [`action.yaml`](./action.yaml) for current list of supported inputs.
diff --git a/action.yaml b/action.yaml
index e5f8ba1..e36fde3 100644
--- a/action.yaml
+++ b/action.yaml
@@ -24,6 +24,10 @@ inputs:
     description: File pattern used for `git add`. For example `src/*.js`
     required: false
     default: "."
+  repository:
+    description: Relative file path under $GITHUB_WORKSPACE to the git repository. Defaults to the root of the repository (`.`).
+    required: false
+    default: "."
 
 outputs:
   commit-url:
@@ -40,3 +44,4 @@ runs:
     - ${{ inputs.branch }}
     - ${{ inputs.empty }}
     - ${{ inputs.file_pattern }}
+    - ${{ inputs.repository }}
diff --git a/entrypoint.sh b/entrypoint.sh
index 6c7f739..a16fb46 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -48,8 +48,14 @@ REPO="${2:?Missing repo input}"
 BRANCH="${3:?Missing branch input}"
 EMPTY="${4:-false}"
 read -r -a FILE_PATTERNS <<<"${5:?Missing file_pattern input}"
+REPOSITORY="${6:-.}"
 
-git config --global --add safe.directory "$GITHUB_WORKSPACE"
+REPOSITORY_PATH="$GITHUB_WORKSPACE/$REPOSITORY"
+echo "Repository path: $REPOSITORY_PATH"
+
+git config --global --add safe.directory "$REPOSITORY_PATH"
+
+cd "$REPOSITORY_PATH"
 
 adds=()
 deletes=()