diff --git a/pre_commit_hooks/check_branch_meets_naming_convention.py b/pre_commit_hooks/check_branch_meets_naming_convention.py
index db9b77e..2e9492d 100644
--- a/pre_commit_hooks/check_branch_meets_naming_convention.py
+++ b/pre_commit_hooks/check_branch_meets_naming_convention.py
@@ -8,6 +8,7 @@ from typing import Sequence
 from pre_commit_hooks.util import CalledProcessError
 from pre_commit_hooks.util import cmd_output
 
+
 def has_naming_convention(
         patterns: AbstractSet[str] = frozenset(),
 ) -> bool:
@@ -17,7 +18,7 @@ def has_naming_convention(
         return False
     chunks = ref_name.strip().split('/')
     branch_name = '/'.join(chunks[2:])
-    
+
     return any(
         re.match(p, branch_name) for p in patterns
     )
@@ -39,9 +40,9 @@ def main(argv: Sequence[str] | None = None) -> int:
     args = parser.parse_args(argv)
 
     patterns = frozenset(args.pattern or ())
-    
+
     return int(has_naming_convention(patterns))
 
+
 if __name__ == '__main__':
     raise SystemExit(main())
-