diff -r 7d3b92e8df13 -r 011eec5a66b2 mercurial/linelog.py
--- a/mercurial/linelog.py	Tue Dec 19 21:34:47 2023 +0100
+++ b/mercurial/linelog.py	Tue Dec 19 21:36:52 2023 +0100
@@ -45,7 +45,7 @@
 @attr.s
 class annotateresult:
     rev = attr.ib()
-    lines = attr.ib()
+    lines = attr.ib(type=bytearray)
     _eof = attr.ib()
 
     def __iter__(self):