diff -r aba1916c1b23 -r 55fd99a23fdc hgext/fetch.py
--- a/hgext/fetch.py	Tue Mar 17 20:41:52 2015 +0900
+++ b/hgext/fetch.py	Tue Mar 17 20:36:33 2015 +0900
@@ -56,8 +56,8 @@
     except error.RepoLookupError:
         branchnode = None
     if parent != branchnode:
-        raise util.Abort(_('working directory not at branch tip '
-                           '(use "hg update" to check out branch tip)'))
+        raise util.Abort(_('working directory not at branch tip'),
+                         hint=_('use "hg update" to check out branch tip'))
 
     wlock = lock = None
     try: