diff -r 49fd21f32695 -r 6266d19556ad hgext/git/gitlog.py
--- a/hgext/git/gitlog.py	Wed Mar 10 18:09:21 2021 +0100
+++ b/hgext/git/gitlog.py	Wed Jan 13 16:14:58 2021 +0100
@@ -8,6 +8,7 @@
     nullhex,
     nullid,
     nullrev,
+    sha1nodeconstants,
     wdirhex,
 )
 from mercurial import (
@@ -422,6 +423,8 @@
 
 
 class manifestlog(baselog):
+    nodeconstants = sha1nodeconstants
+
     def __getitem__(self, node):
         return self.get(b'', node)