Use commit ID in cloud build number

src/version.json

@@ -6,11 +6,7 @@
   ],
   "cloudBuild": {
     "buildNumber": {
-      "enabled": true,
-      "includeCommitId": {
-        "when": "always",
-        "where": "fourthVersionComponent" // keep it short, so we don't have max_path problems
-      }
+      "enabled": true
     }
   }
 }