diff --git a/.github/workflows/claude-pr-review.yml b/.github/workflows/claude-pr-review.yml
index cf5439590..b85b5c771 100644
--- a/.github/workflows/claude-pr-review.yml
+++ b/.github/workflows/claude-pr-review.yml
@@ -53,6 +53,7 @@ jobs:
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
+          ref: refs/pull/${{ github.event.pull_request.number }}/head
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4
@@ -86,4 +87,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           COMMIT_SHA: ${{ github.event.pull_request.head.sha }}
           BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          REPOSITORY: ${{ github.repository }}
\ No newline at end of file
+          REPOSITORY: ${{ github.repository }}