diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1054,6 +1054,7 @@
      _('set branch name even if it shadows an existing branch')),
      ('C', 'clean', None, _('reset branch name to parent branch name')),
      ('r', 'rev', [], _('change branches of the given revs (EXPERIMENTAL)')),
+     ('s', 'show', None, _('show branch name of the given rev'))
     ],
     _('[-fC] [NAME]'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION)
@@ -1097,6 +1098,11 @@
         ui.write("%s\n" % repo.dirstate.branch())
         return
 
+    elif opts.get('show') and label:
+        ctx = scmutil.revsingle(repo, label)
+        ui.write("%s\n" % ctx.branch())
+        return
+
     with repo.wlock():
         if opts.get('clean'):
             label = repo[None].p1().branch()