diff -r 6068712cbf03 -r d7f93ebbbbdf mercurial/bundle2.py
--- a/mercurial/bundle2.py	Fri May 05 17:28:52 2017 +0200
+++ b/mercurial/bundle2.py	Fri May 05 17:31:15 2017 +0200
@@ -1375,6 +1375,8 @@
         part.addparam('nbchanges', str(cg.extras['clcount']),
                       mandatory=False)
 
+    addparttagsfnodescache(repo, bundler, outgoing)
+
 def addparttagsfnodescache(repo, bundler, outgoing):
     # we include the tags fnode cache for the bundle changeset
     # (as an optional parts)