$ git clone -n http://fedora.riscv.rocks:3000/rpms/livecd-tools.git /var/lib/mock/f40-build-796006-140446/root/chroot_tmpdir/scmroot/livecd-tools
Cloning into '/var/lib/mock/f40-build-796006-140446/root/chroot_tmpdir/scmroot/livecd-tools'...
$ git fetch origin 18cf4e0842280878185e509602a248c1bdce4022:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/livecd-tools
 * [new ref]         18cf4e0842280878185e509602a248c1bdce4022 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18cf4e0 Allow lazy unmount of special bind-mounts