$ git clone -n https://src.fedoraproject.org/rpms/sassc.git /var/lib/mock/f45-build-35588-696/root/chroot_tmpdir/scmroot/sassc
Cloning into '/var/lib/mock/f45-build-35588-696/root/chroot_tmpdir/scmroot/sassc'...
$ git fetch origin d159c189e95f7460a85b9650d82623c6250546b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sassc
 * [new ref]         d159c189e95f7460a85b9650d82623c6250546b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d159c18 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild