diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 3e3e263..2acbc9f 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -20,7 +20,7 @@ jobs:
     - name: Check out code
       uses: actions/checkout@v2
       with:
-        ref: ${{github.event.pull_request.head.ref}}
+        ref: ${{github.event.pull_request.head.sha}}
         
     # Setting up helm binary
     - name: Set up Helm