diff --git a/.github/workflows/ec2-pipeline.yml b/.github/workflows/ec2-pipeline.yml
index d70e474..7499620 100644
--- a/.github/workflows/ec2-pipeline.yml
+++ b/.github/workflows/ec2-pipeline.yml
@@ -51,7 +51,7 @@ jobs:
 
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 1
 
       - name: Authenticate with AWS ECR
         uses: aws-actions/configure-aws-credentials@v4