diff --git a/.github/workflows/acctest.yml b/.github/workflows/acctest.yml
index e30fe867a..0edef9b49 100644
--- a/.github/workflows/acctest.yml
+++ b/.github/workflows/acctest.yml
@@ -75,7 +75,9 @@ jobs:
     steps:
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+      with:
+        ref: ${{ github.event.pull_request.head.sha || github.ref }}
 
     - name: Set up Go
       uses: actions/setup-go@v4