fix for #157

pre_commit/main.py

@@ -94,6 +94,11 @@ def main(argv=None):
         '--source', '-s',
         help='The remote branch"s commit_id when using `git push`',
     )
+    run_parser.add_argument(
+        '--allow-unstaged-config', default=False, action='store_true',
+        help='Allow an unstaged config to be present.  Note that this will'
+        'be stashed before parsing unless --no-stash is specified'
+    )
     run_mutex_group = run_parser.add_mutually_exclusive_group(required=False)
     run_mutex_group.add_argument(
         '--all-files', '-a', action='store_true', default=False,