Further searches showed an old github ticket asking for something similar and quoting a lack of build machines to provide updated packages. Is that still the case?
Either way, I am trying to checkout and compile from source as well, that might be the better approach.
FYI, for early testing the old cvmfs-testing EL7 packages seem to work (but need also the EL7 openssl libs, which I managed to find and extract manually).
Dave Dykstra used the Fedora cloud build service at
to build from the source rpm for multiple platforms, incl. CentOSStream8/Power, which should be compatible to EL8/Power. Is that something you might to be interested in?