# File lib/rugged_adapter/git_layer_rugged.rb, line 608
      def update_ref(ref, commit_sha)
        ref = "refs/heads/#{ref}" unless ref =~ /^refs\/heads\//
        if _ref = @repo.references[ref]
          @repo.references.update(_ref, commit_sha)
        else
          @repo.create_branch(ref, commit_sha)
          @repo.checkout(ref, :strategy => :force) unless @repo.bare?
        end
      end