$ git clone -n https://src.fedoraproject.org/rpms/dhcp-forwarder.git /var/lib/mock/f40-build-1994311-43784/root/chroot_tmpdir/scmroot/dhcp-forwarder
Cloning into '/var/lib/mock/f40-build-1994311-43784/root/chroot_tmpdir/scmroot/dhcp-forwarder'...
$ git fetch origin 1622a3baffe696e00f20de86c56689588fba3539:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcp-forwarder
 * [new ref]         1622a3baffe696e00f20de86c56689588fba3539 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1622a3b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild