diff --git a/pre_commit/staged_files_only.py b/pre_commit/staged_files_only.py
index 2c33abd7..b213ba45 100644
--- a/pre_commit/staged_files_only.py
+++ b/pre_commit/staged_files_only.py
@@ -54,7 +54,7 @@ def _unstaged_changes_cleared(patch_dir: str) -> Generator[None, None, None]:
         (sys.platform == 'darwin' or sys.platform == 'win32') and
             os.path.exists('./.git/fsmonitor--daemon.ipc') and
             cmd_output_b('git', 'fsmonitor--daemon', 'status')[0] == 0
-    ):
+    ):  # pragma: no cover
         logger.warning(
             'The fsmonitor daemon is running; '
             'a bug in the fsmonitor daemon sometimes causes data loss '