feat: enhance error handling for non-git directories (#1885)

Co-authored-by: GitHub Action <action@github.com>

src/utils.ts

@@ -680,6 +680,12 @@ export const isInsideWorkTree = async ({
     }
   )
 
+  if (stdout.trim() !== 'true') {
+    core.debug(
+      `The current working directory is not inside a git repository: ${cwd}`
+    )
+  }
+
   return stdout.trim() === 'true'
 }