$ git clone -n https://src.fedoraproject.org/rpms/yices.git /var/lib/mock/f42-build-3494553-45873/root/chroot_tmpdir/scmroot/yices
Cloning into '/var/lib/mock/f42-build-3494553-45873/root/chroot_tmpdir/scmroot/yices'...
$ git fetch origin 605ad4cf449a0345b411f839eef27b98f15613a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yices
 * [new ref]         605ad4cf449a0345b411f839eef27b98f15613a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 605ad4c Rebuild for cryptominisat 5.12.1