Merge branch 'patch-1' into 'master'

Fix wrong file permissions in Git hook.

See merge request pycqa/flake8!439

src/flake8/main/git.py

@@ -152,6 +152,7 @@ def copy_file_to(destination_directory, filepath, contents):
     temporary_filepath = os.path.join(temporary_directory, filename)
     with open(temporary_filepath, "wb") as fd:
         fd.write(contents)
+    shutil.copystat(filepath, temporary_filepath)
     return temporary_filepath