diff --git a/pre_commit/util.py b/pre_commit/util.py
index 81cd3064..081adf27 100644
--- a/pre_commit/util.py
+++ b/pre_commit/util.py
@@ -76,7 +76,6 @@ def no_git_env():
     # while running pre-commit hooks in submodules.
     # GIT_DIR: Causes git clone to clone wrong thing
     # GIT_INDEX_FILE: Causes 'error invalid object ...' during commit
-
     return {
         k: v for k, v in os.environ.items()
         if not k.startswith('GIT_') or k in {'GIT_SSH'}