Improve package name detection
    
    Look up the parent repo of forks for the package name.
    
    This requires the user to have a valid Gitlab API token in
    their configuration. It will raise an error if it takes this
    path and does not have permission.
    
    Note that when https://gitlab.com/gitlab-org/gitlab/-/issues/361952
    is fixed in Gitlab, the token will not be required in this case.
    
    Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>