diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index cce8c0af0..09488a68d 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -18,6 +18,8 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/checkout@v3
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
 
     - name: Install Rust
       uses: actions-rs/toolchain@v1