diff --git a/.github/workflows/updater.py b/.github/workflows/updater.py
index 21800e6..b976fb7 100755
--- a/.github/workflows/updater.py
+++ b/.github/workflows/updater.py
@@ -99,7 +99,7 @@ def main():
 
     # Proceed only if a PR for this new version does not already exist
     branch = f"ci-auto-update-v{latest_version}"
-    command = ["git", "ls-remote", "--exit-code", "-h", repo, branch]
+    command = ["git", "ls-remote", "--exit-code", "-h", f"https://github.com/{os.environ['GITHUB_REPOSITORY']}.git", branch]
     if run(command, stderr=PIPE, stdout=PIPE, check=False).returncode == 0:
         logging.warning("A branch already exists for this update")
         write_github_env(False, "", "")