--- a/mercurial/bookmarks.py	Fri Sep 06 23:15:52 2019 -0700
+++ b/mercurial/bookmarks.py	Sun Sep 08 20:09:31 2019 -0400
@@ -480,8 +480,7 @@
 
     Each elements of lists in result tuple is tuple "(bookmark name,
     changeset ID on source side, changeset ID on destination
-    side)". Each changeset IDs are 40 hexadecimal digit string or
-    None.
+    side)". Each changeset ID is a binary node or None.
 
     Changeset IDs of tuples in "addsrc", "adddst", "differ" or
      "invalid" list may be unknown for repo.