--- a/hgext3rd/evolve/__init__.py	Sat Nov 10 00:55:34 2018 +0100
+++ b/hgext3rd/evolve/__init__.py	Tue Nov 06 11:22:39 2018 +0530
@@ -1136,6 +1136,16 @@
         if opts['evolve']:
             cmdutil.bailifchanged(repo)
 
+        children = [ctx for ctx in wparents[0].children() if not ctx.obsolete()]
+        topic = _getcurrenttopic(repo)
+        filtered = set()
+        template = shorttemplate
+        if topic and not opts.get("no_topic", False):
+            filtered = set(ctx for ctx in children if ctx.topic() != topic)
+            children = [ctx for ctx in children if ctx not in filtered]
+            template = utility.stacktemplate
+        displayer = compat.changesetdisplayer(ui, repo, {'template': template})
+
         if not opts['merge']:
             # we only skip the check if noconflict is set
             if ui.config('commands', 'update.check') == 'noconflict':
@@ -1147,15 +1157,6 @@
                     exc.hint = _('do you want --merge?')
                     raise
 
-        children = [ctx for ctx in wparents[0].children() if not ctx.obsolete()]
-        topic = _getcurrenttopic(repo)
-        filtered = set()
-        template = shorttemplate
-        if topic and not opts.get("no_topic", False):
-            filtered = set(ctx for ctx in children if ctx.topic() != topic)
-            children = [ctx for ctx in children if ctx not in filtered]
-            template = utility.stacktemplate
-        displayer = compat.changesetdisplayer(ui, repo, {'template': template})
         if len(children) == 1:
             c = children[0]
             return _updatetonext(ui, repo, c, displayer, opts)