--- a/hgext/split.py	Sat Feb 24 11:14:28 2018 -0800
+++ b/hgext/split.py	Sat Feb 24 11:20:24 2018 -0800
@@ -173,6 +173,6 @@
 
     return committed[-1]
 
-def dorebase(ui, repo, src, dest):
+def dorebase(ui, repo, src, destctx):
     rebase.rebase(ui, repo, rev=[revsetlang.formatspec('%ld', src)],
-                  dest=revsetlang.formatspec('%d', dest))
+                  dest=revsetlang.formatspec('%d', destctx.rev()))