GetCherryPickForRefName.
        [Preview API] Retrieve information about a cherry pick for a specific branch.
        :param str project: Project ID or project name
        :param str repository_id: ID of the repository.
        :param str ref_name: The GitAsyncRefOperationParameters generatedRefName used for the cherry pick operation.
        :rtype: :class:`<GitCherryPick> <azure.devops.v5_1.git.models.GitCherryPick>`

def get_cherry_pick_for_ref_name(self, project, repository_id, ref_name):
        """GetCherryPickForRefName.
        [Preview API] Retrieve information about a cherry pick for a specific branch.
        :param str project: Project ID or project name
        :param str repository_id: ID of the repository.
        :param str ref_name: The GitAsyncRefOperationParameters generatedRefName used for the cherry pick operation.
        :rtype: :class:`<GitCherryPick> <azure.devops.v5_1.git.models.GitCherryPick>`
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        if repository_id is not None:
            route_values['repositoryId'] = self._serialize.url('repository_id', repository_id, 'str')
        query_parameters = {}
        if ref_name is not None:
            query_parameters['refName'] = self._serialize.query('ref_name', ref_name, 'str')
        response = self._send(http_method='GET',
                              location_id='033bad68-9a14-43d1-90e0-59cb8856fef6',
                              version='5.1-preview.1',
                              route_values=route_values,
                              query_parameters=query_parameters)
        return self._deserialize('GitCherryPick', response)