I’m not sure there is a set of pre-release RPMs yet.
They are at the point of branching rawhide to f42 and doing mass rebuild at the moment. Then they have work to do to settle things down.
I could install/update F42 with VPN Server in US. It takes a while to replicate the new structure. A lot of places do have just empty F42 directories on the mirror.
Yeah, the few days around branching often have things like this.
After branching tuesday, it took us a bit to get a compose, then it didn’t fully sync out right, but that all got sorted out yesterday, so it should all be there right now.