$ git clone -n http://fedora.riscv.rocks:3000/rpms/systemd.git /var/lib/mock/f38-build-709054-92686/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/f38-build-709054-92686/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin b750c510284c7ca60644dc9080f1bd055908d782:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/systemd
 * [new ref]         b750c510284c7ca60644dc9080f1bd055908d782 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b750c51 Rebuild (current toolchain, GCC 13 + binutils 2.40)