diff --git a/tests/utils.py b/tests/utils.py
index 06a17abfbbb..d6146af47f7 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -38,9 +38,13 @@ def __exit__(self, exc_type, exc_val, exc_tb):
 class GitTemporaryDirectory(ChdirTemporaryDirectory):
     def __enter__(self):
         res = super().__enter__()
-        make_repo()
+        self.repo = make_repo()
         return res
 
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        del self.repo
+        super().__exit__(exc_type, exc_val, exc_tb)
+
 
 def make_repo(path=None):
     if not path: