diff --git a/lib/redmine/scm/adapters/abstract_adapter.rb b/lib/redmine/scm/adapters/abstract_adapter.rb
index 1c172f342..4a425481c 100644
--- a/lib/redmine/scm/adapters/abstract_adapter.rb
+++ b/lib/redmine/scm/adapters/abstract_adapter.rb
@@ -376,6 +376,10 @@ module Redmine
           lines.empty?
         end
       end
+
+      class Branch < String
+        attr_accessor :revision, :scmid
+      end
     end
   end
 end