--- a/src/hggit_serve.py	Mon Feb 16 00:12:57 2026 -0500
+++ b/src/hggit_serve.py	Mon Feb 16 00:25:27 2026 -0500
@@ -175,7 +175,9 @@
     def write_the_rest() -> t.Iterator[bytes]:
         with call, rest:
             # if it's good enough for shutil it's good enough for me
-            while more := rest.read(shutil.COPY_BUFSIZE):
+            # technically not in the docs but everybody it
+            bs = shutil.COPY_BUFSIZE  # type: ignore[attr-defined]
+            while more := rest.read(bs):
                 yield more
         if perm == _PUSH:
             _importing_enter(repo)
@@ -211,7 +213,7 @@
     setattr(repo, _ILEVEL_ATTR, level)
 
 
-def _is_importing(repo: hgrepo.IRepo) -> None:
+def _is_importing(repo: hgrepo.IRepo) -> bool:
     """Call this to check if you're currently importing."""
     return hasattr(repo, _ILEVEL_ATTR)