def METHOD_NAME(version):
    tag = rc_tag_name(version)
    response = _github_request("get", "repos/{}/releases/tags/{}".format(repo, tag))
    if response.status_code == 404:
        return None
    elif response.status_code == 200:
        return response.json()
    raise exception_from_error("Unknown error while looking RC release: ", response)