--- a/hgext/shelve.py	Sat Jun 30 07:23:02 2018 +0530
+++ b/hgext/shelve.py	Sun Jul 01 21:40:55 2018 +0900
@@ -709,7 +709,7 @@
             state.nodestoremove.append(newnode)
             shelvectx = repo[newnode]
 
-        hg.updaterepo(repo, pendingctx.node(), False)
+        hg.updaterepo(repo, pendingctx.node(), overwrite=False)
 
         if repo.vfs.exists('unshelverebasestate'):
             repo.vfs.rename('unshelverebasestate', 'rebasestate')