Add comment sha to the deployment comment

Author: st0012

.github/workflows/cloudflare-preview.yml

@@ -85,7 +85,7 @@ jobs:
               comment.body.includes(commentMarker)
             );
 
-            const commentBody = `${commentMarker} [${url}](${url})`;
+            const commentBody = `${commentMarker} [${url}](${url}) (commit: ${{ github.event.pull_request.head.ref.sha }})`;
 
             if (existingComment) {
               // Update existing comment