diff --git a/.github/workflows/unittest.yaml b/.github/workflows/unittest.yaml
index 8db7758..4ced589 100644
--- a/.github/workflows/unittest.yaml
+++ b/.github/workflows/unittest.yaml
@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.head_ref }}
-          repository: ${{ github.repositoryUrl }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
           fetch-depth: 0
 
       - name: Get changed files