diff --git a/hgext/git/manifest.py b/hgext/git/manifest.py
--- a/hgext/git/manifest.py
+++ b/hgext/git/manifest.py
@@ -172,7 +172,7 @@
         for te in tree:
             # TODO: can we prune dir walks with the matcher?
             realname = subdir + pycompat.fsencode(te.name)
-            if te.type == r'tree':
+            if te.type == pygit2.GIT_OBJ_TREE:
                 for inner in self._walkonetree(
                     self._git_repo[te.id], match, realname + b'/'
                 ):