os.environ['GIT_AUTHOR_EMAIL'] = 'test_git_cache@example.com'
os.environ['GIT_COMMITTER_EMAIL'] = 'test_git_cache@example.com'
+ os.environ['BACKOFF_MAX_TIME'] = '0'
+
self.tempdir = tempfile.TemporaryDirectory(prefix='git_cache_test-')
self.upstream = os.path.join(self.tempdir.name, 'upstream')
subprocess.run(['git', 'init', self.upstream], check=True)