diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index aee6610b..ae0590a6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Checkout codebase
         uses: actions/checkout@v7
         with:
-          ref: ${{ github.ref }}
+          ref: ${{ github.sha }}
           path: code
 
       - name: Setup Go