diff --git a/github_scripts/get_git_sources.py b/github_scripts/get_git_sources.py
index 883fd635..e61bb9d2 100644
--- a/github_scripts/get_git_sources.py
+++ b/github_scripts/get_git_sources.py
@@ -324,10 +324,7 @@ def clone_repo_mirror(
         # Clone if the repo doesn't exist. If the mirror is local we don't copy
         # the objects to make it much faster.
         try:
-            # Adding `--revision {fetch}` to the clone would be more efficient
-            # due to avoiding an unnecessary checkout, however we need to
-            # support versions of git older than v2.49.
-            run_command(f"git clone --shared {mirror_loc} {loc}")
+            run_command(f"git clone --shared --no-checkout {mirror_loc} {loc}")
             run_command(f"git -C {loc} checkout {fetch}")
         except SubprocessRunError:
             logger.error(