$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc-tar.git /var/lib/mock/f38-build-726107-99945/root/chroot_tmpdir/scmroot/ghc-tar
Cloning into '/var/lib/mock/f38-build-726107-99945/root/chroot_tmpdir/scmroot/ghc-tar'...
$ git fetch origin f5e0597cd6cc9aab1b5a6a1107d315fdaa1a5e84:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc-tar
 * [new ref]         f5e0597cd6cc9aab1b5a6a1107d315fdaa1a5e84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5e0597 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: