$ git clone -n http://fedora.riscv.rocks:3000/rpms/systemd.git /var/lib/mock/f41-build-812383-147821/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/f41-build-812383-147821/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin ab3f3641592b2f4f64f8e60cf17db2680323cf64:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/systemd
 * [new ref]         ab3f3641592b2f4f64f8e60cf17db2680323cf64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab3f364 riscv: backport vmspawn support