diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index f692eaba2..fb93c2566 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -44,6 +44,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Set up Node.js
         uses: actions/setup-node@v3