$ git clone -n https://src.fedoraproject.org/rpms/ks-install.git /var/lib/mock/f45-build-15456-474/root/chroot_tmpdir/scmroot/ks-install
Cloning into '/var/lib/mock/f45-build-15456-474/root/chroot_tmpdir/scmroot/ks-install'...
$ git fetch origin 8da084c186211566fc89405ca9050a6c070d2dc2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ks-install
 * [new ref]         8da084c186211566fc89405ca9050a6c070d2dc2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8da084c don't build source between local and UTC midnight