code: def retrieve(self, request, project, pk=None):
          
          try:
              push = Push.objects.get(repository__name=project,
                                      id=pk)
              serializer = PushSerializer(push)
              return Response(serializer.data)
          except Push.DoesNotExist:
              return Response("No push with id: {0}".format(pk),
                              status=HTTP_404_NOT_FOUND)
docs: GET method implementation for detail view of ``push``