Description of problem:
The URL for this package is for a page that (no-longer?) exists.
Steps to Reproduce:
$ rpm -qi appstream-data | grep ^URL
URL : https://github.com/hughsie/createrepo_as
Additionally its not clear from the current spec how all this data is generated. Please include a README or a spec comment about it.
Thanks, I've updated the URL and description in https://src.fedoraproject.org/rpms/appstream-data/c/8bf763bfcc17ad677f8952f532115230c9267659