Mock already ships config for CentOS Stream https://github.com/rpm-software-management/mock/blob/devel/mock-core-configs...

Thou, it does not contains Epel as oposed to epel-8-* configs: https://github.com/rpm-software-management/mock/blob/devel/mock-core-configs...

I am not sure what should be relation between Epel and Stream. It is intended to work together? Or not? I will appreciate any comments to those Mock's configs.