--- a/hgext3rd/evolve/rewriteutil.py	Sat May 19 18:26:36 2018 +0530
+++ b/hgext3rd/evolve/rewriteutil.py	Tue May 15 22:17:27 2018 -0700
@@ -136,7 +136,7 @@
     """prepare the working directory for a split (for topic hooking)
     """
     hg.update(repo, prev)
-    commands.revert(ui, repo, rev=ctx.rev(), all=True)
+    commands.revert(ui, repo, rev=ctx.hex(), all=True)
 
 def reachablefrombookmark(repo, revs, bookmarks):
     """filter revisions and bookmarks reachable from the given bookmark