--- a/mercurial/configitems.py	Fri Aug 11 00:32:19 2017 -0700
+++ b/mercurial/configitems.py	Tue Aug 29 17:27:37 2017 -0700
@@ -223,6 +223,9 @@
 coreconfigitem('experimental', 'obsmarkers-exchange-debug',
     default=False,
 )
+coreconfigitem('experimental', 'rebase.multidest',
+    default=False,
+)
 coreconfigitem('experimental', 'revertalternateinteractivemode',
     default=True,
 )