$ git clone -n https://src.fedoraproject.org/rpms/gq.git /var/lib/mock/f45-build-12977-444/root/chroot_tmpdir/scmroot/gq
Cloning into '/var/lib/mock/f45-build-12977-444/root/chroot_tmpdir/scmroot/gq'...
$ git fetch origin 9104a95ba11761c20dc0b2530f9ed5159939349f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gq
 * [new ref]         9104a95ba11761c20dc0b2530f9ed5159939349f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9104a95 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild