$ git clone -n https://src.fedoraproject.org/rpms/libICE.git /var/lib/mock/f45-build-15783-479/root/chroot_tmpdir/scmroot/libICE
Cloning into '/var/lib/mock/f45-build-15783-479/root/chroot_tmpdir/scmroot/libICE'...
$ git fetch origin 9c58df00621cd95abb48ca1728e9c2dd3a6139f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libICE
 * [new ref]         9c58df00621cd95abb48ca1728e9c2dd3a6139f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c58df0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild