diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 5e661042e2..3015cb7416 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -12,7 +12,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          fetch-depth: 0
+          fetch-depth: 2
+      - run: git diff HEAD~1
       - name: changed files
         id: files
         run: |