$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc.git /var/lib/mock/f40-build-740948-109874/root/chroot_tmpdir/scmroot/ghc
Cloning into '/var/lib/mock/f40-build-740948-109874/root/chroot_tmpdir/scmroot/ghc'...
$ git fetch origin 2f5be1a71cfd6eb527db72df950b45dd81cdd6d9:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc
 * [new ref]         2f5be1a71cfd6eb527db72df950b45dd81cdd6d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f5be1a Bump release