added automatic deletion of preexistent repo dir

utils.py

@@ -1,13 +1,16 @@
 from pydantic import AnyHttpUrl
 from pathlib import Path
 from git import Repo
+import shutil
 
 def clone_repository(repo_url: AnyHttpUrl) -> Path:
     # extract repo name
     repo_name = repo_url.split('/')[-1].replace('.git', '')
     dst_dir = Path(__file__).parent / repo_name
     # prepare repo download dir
-    dst_dir.mkdir(exist_ok=True)
+    if dst_dir.exists():
+        shutil.rmtree(dst_dir)
+    dst_dir.mkdir()
     # git clone repo
     Repo.clone_from(url=repo_url, to_path=dst_dir)
     return dst_dir