Changelog for python3-keystone-18.0.0-1.el8.noarch.rpm :

* Wed Oct 14 2020 RDO 1:18.0.0-1- Update to 18.0.0- Enable sources tarball validation using GPG signature.
* Fri Sep 25 2020 RDO 1:18.0.0-0.1.0rc1- Update to 18.0.0.0rc1