--- a/hgext/git/manifest.py	Thu Mar 26 17:49:30 2020 -0400
+++ b/hgext/git/manifest.py	Fri Mar 27 10:38:40 2020 -0400
@@ -232,7 +232,7 @@
         # just narrow?
         assert not match or isinstance(match, matchmod.alwaysmatcher)
 
-        touched_dirs = pathutil.dirs(self._pending_changes)
+        touched_dirs = pathutil.dirs(list(self._pending_changes))
         trees = {
             b'': self._tree,
         }