diff --git a/action.yml b/action.yml
index 91f18509..f89b75a2 100644
--- a/action.yml
+++ b/action.yml
@@ -20,7 +20,7 @@ inputs:
   branch:
     description: Git branch name, where changes should be pushed too. Required if Action is used on the `pull_request` event
     required: false
-    default: ${{ github.head_ref }}
+    default: ${{ github.ref_name }}
   file_pattern:
     description: File pattern used for `git add`. For example `component-definitions/*`. Defaults to (`.`)
     required: false
@@ -55,7 +55,7 @@ outputs:
 runs:
   using: "docker"
   image: "Dockerfile"
-  entrypoint: [ "/entrypoint.sh"]
+  entrypoint: "/entrypoint.sh"
 
 branding:
   icon: "check"
diff --git a/entrypoint.sh b/entrypoint.sh
index f673a9a5..281ad4ef 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -2,6 +2,27 @@
 
 set -eu
 
+# Manage newest git versions (related to CVE https://github.blog/2022-04-12-git-security-vulnerability-announced/)
+#
+if [ -z ${GITHUB_WORKSPACE+x} ]; then
+  echo "Setting git safe.directory default: /github/workspace ..."
+  git config --global --add safe.directory /github/workspace
+else
+  echo "Setting git safe.directory GITHUB_WORKSPACE: $GITHUB_WORKSPACE ..."
+  git config --global --add safe.directory "$GITHUB_WORKSPACE"
+fi
+
+if [ -z ${INPUT_REPOSITORY+x} ]; then
+    echo "Skipping setting working directory as safe directory"
+else
+   echo "Setting git safe.directory default: $INPUT_REPOSITORY..."
+   git config --global --add safe.directory "$INPUT_REPOSITORY"
+fi
+
+exec 3>&1
+
+trap exec 3>&- EXIT
+
 output=$(python3.8 -m trestlebot \
         --markdown-path="${INPUT_MARKDOWN_PATH}" \
         --assemble-model="${INPUT_ASSEMBLE_MODEL}" \
@@ -13,9 +34,7 @@ output=$(python3.8 -m trestlebot \
         --committer-email="${INPUT_COMMIT_USER_EMAIL}" \
         --author-name="${INPUT_COMMIT_AUTHOR_NAME}" \
         --author-email="${INPUT_COMMIT_AUTHOR_EMAIL}" \
-        --working-dir="${INPUT_WORKING_DIR}" 2>&1 | tee log.txt)
-
-cat log.txt
+        --working-dir="${INPUT_REPOSITORY}" | tee /dev/fd/3)
 
 commit=$(echo "$output" | grep "Commit Hash:" | sed 's/.*: //')
 
@@ -24,4 +43,4 @@ if [ -n "$commit" ]; then
     echo "commit=$commit" >> "$GITHUB_OUTPUT"
 else
     echo "changes=false" >> "$GITHUB_OUTPUT"
-fi
+fi
\ No newline at end of file
diff --git a/trestlebot/bot.py b/trestlebot/bot.py
index 269227bc..84f57a03 100644
--- a/trestlebot/bot.py
+++ b/trestlebot/bot.py
@@ -41,8 +41,15 @@ class RepoException(Exception):
 def _stage_files(gitwd: Repo, patterns: List[str]) -> None:
     """Stages files in git based on file patterns"""
     for pattern in patterns:
-        logging.info(f"Adding file for pattern {pattern}")
-        gitwd.index.add(pattern)
+        if pattern == ".":
+            logging.info("Staging all repository changes")
+            # Using check to avoid adding git directory
+            # https://github.com/gitpython-developers/GitPython/issues/292
+            gitwd.git.add(all=True)
+            return
+        else:
+            logging.info(f"Adding file for pattern {pattern}")
+            gitwd.git.add(pattern)
 
 
 def _local_commit(
diff --git a/trestlebot/cli.py b/trestlebot/cli.py
index 649ddc9f..ff26c33a 100644
--- a/trestlebot/cli.py
+++ b/trestlebot/cli.py
@@ -172,7 +172,8 @@ def run() -> None:
         )
 
         # Print the full commit sha
-        print(f" Commit Hash: {commit_sha}")
+        if commit_sha:
+            print(f"Commit Hash: {commit_sha}")
 
     except Exception as e:
         exit_code = handle_exception(e)