diff -r 6614b301ea58 -r e41a164db7a9 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Wed Jan 15 15:50:04 2020 +0100
+++ b/mercurial/debugcommands.py	Wed Jan 15 15:50:14 2020 +0100
@@ -2137,6 +2137,7 @@
         if nm_data is not None:
             docket, data = nm_data
             ui.write((b"uid: %s\n") % docket.uid)
+            ui.write((b"tip-rev: %d\n") % docket.tip_rev)
 
 
 @command(