Update ci.yml

Author: kayman-mk

Diff for: .github/workflows/ci.yml

@@ -56,6 +56,8 @@ jobs:
     steps:
     - name: CHeckout branch
       uses: actions/checkout@v3
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
 
     - name: Generate TF docs
       uses: terraform-docs/[email protected]