$ git clone -n https://src.fedoraproject.org/rpms/dhcp-forwarder.git /var/lib/mock/f45-build-7471-364/root/chroot_tmpdir/scmroot/dhcp-forwarder
Cloning into '/var/lib/mock/f45-build-7471-364/root/chroot_tmpdir/scmroot/dhcp-forwarder'...
$ git fetch origin 4849031eb30273e1d3f5a4e1ea3f228050f84176:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcp-forwarder
 * [new ref]         4849031eb30273e1d3f5a4e1ea3f228050f84176 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4849031 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild