diff --git a/.github/workflows/check_cla.yml b/.github/workflows/check_cla.yml
index 45ea0e6..ab7d872 100644
--- a/.github/workflows/check_cla.yml
+++ b/.github/workflows/check_cla.yml
@@ -78,6 +78,9 @@ jobs:
 
       - name: Checkout
         uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
 
       - name: Close Pull Request
         id: close_pr