diff -r a2391f919141 -r 2fcaee044a8c hgext3rd/evolve/evolvecmd.py
--- a/hgext3rd/evolve/evolvecmd.py	Thu Jan 23 19:33:40 2020 +0700
+++ b/hgext3rd/evolve/evolvecmd.py	Fri Jan 17 20:40:24 2020 +0700
@@ -279,6 +279,7 @@
         text += bumped.description()
         memctx = wctx.tomemctx(text,
                                parents=(prec.node(), nodemod.nullid),
+                               branch=bumped.branch(),
                                date=bumped.date(),
                                extra=bumped.extra(),
                                user=bumped.user())