Unexpected output: $ copr mock-config praiskup/postgresql-rhbz1348125 fedora-rawhide-x86_64 Something went wrong: Error: Chroot not found. Expected behavior: Because it is really convenient way to work with Fedora Rawhide, copr should map 'fedora-rawhide' to 'fedora-N' correctly and do the right thing transparently.
Another issue is that the actual mock does not provide 'fedora-26-x86_64' chroot. So the command: $ copr mock-config praiskup/postgresql-rhbz1348125 fedora-26-x86_64 Provides non-working mock profile.
FTR: reported in time when 'fedora-rawhide-x86_44' builds against f26-build target in koji. So those should be equivalent.
I think this is no longer relevant so closing this. Feel free to reopen if this is still a problem.