diff -r 8f3c6fb55369 -r a168799687e5 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Fri Apr 13 11:37:37 2018 -0700
+++ b/mercurial/localrepo.py	Fri Apr 13 12:13:42 2018 -0700
@@ -235,6 +235,9 @@
     def capabilities(self):
         return self._caps
 
+    def clonebundles(self):
+        return self._repo.tryread('clonebundles.manifest')
+
     def debugwireargs(self, one, two, three=None, four=None, five=None):
         """Used to test argument passing over the wire"""
         return "%s %s %s %s %s" % (one, two, pycompat.bytestr(three),