diff -r 2974cdda819b -r fd5b8e696b75 hgext/convert/convcmd.py
--- a/hgext/convert/convcmd.py	Thu Mar 03 07:56:47 2022 -0800
+++ b/hgext/convert/convcmd.py	Mon Feb 21 12:42:48 2022 -0700
@@ -242,7 +242,7 @@
         m = {}
         try:
             fp = open(path, b'rb')
-            for i, line in enumerate(util.iterfile(fp)):
+            for i, line in enumerate(fp):
                 line = line.splitlines()[0].rstrip()
                 if not line:
                     # Ignore blank lines