diff -r c29d312657d2 -r 7a8c9869e4fe mercurial/pure/parsers.py
--- a/mercurial/pure/parsers.py	Fri Oct 01 03:30:00 2021 +0200
+++ b/mercurial/pure/parsers.py	Fri Oct 01 09:12:52 2021 +0200
@@ -162,7 +162,7 @@
         is not expected to change, unlike the __init__ one.
         """
         if state == b'm':
-            return cls.new_merged()
+            return cls(wc_tracked=True, p1_tracked=True, p2_info=True)
         elif state == b'a':
             return cls.new_added()
         elif state == b'r':