diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3cfbbf57..9d75eb51 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -899,10 +899,12 @@ jobs:
           bash
       - name: Run changed-files with custom sha
         id: changed-files-custom-sha
+        if: github.event.action != 'closed'
         uses: ./
         with:
           sha: ${{ github.event.pull_request.head.sha }}
       - name: Show output
+        if: github.event.action != 'closed'
         run: |
           echo '${{ toJSON(steps.changed-files-custom-sha.outputs) }}'
         shell:
diff --git a/diff-sha.sh b/diff-sha.sh
index ba69cf4f..27a60f10 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -135,7 +135,7 @@ else
   echo "Fetching remote refs..."
   
   git fetch --depth="$INPUT_FETCH_DEPTH" origin +refs/heads/"$TARGET_BRANCH":refs/remotes/origin/"$TARGET_BRANCH"
-  git branch --track "$TARGET_BRANCH" origin/"$TARGET_BRANCH" || true
+  git branch --track "$TARGET_BRANCH" origin/"$TARGET_BRANCH" 2>/dev/null || true
   
   depth=$INPUT_FETCH_DEPTH