bitbucket.rb

def branch
        case @vcs
        when 'github'
          if @data.key? 'ref'
            @data['ref'].sub('refs/heads/', '')
          else
            @data['repository']['default_branch']
          end
        when 'gitlab'
          @data['ref'].sub('refs/heads/', '')
        when 'stash'
          @data['refChanges'][0]['refId'].sub('refs/heads/', '')
        when 'bitbucket'
          return @data['push']['changes'][0]['new']['name'] unless @data['push']['changes'][0]['new'].nil?
          @data['push']['changes'][0]['old']['name']
        when 'tfs'
          @data['resource']['refUpdates'][0]['name'].sub('refs/heads/', '')
        end
      end