$ git clone -n https://src.fedoraproject.org/rpms/cups.git /var/lib/mock/f41-build-side-1-2749953-31015/root/chroot_tmpdir/scmroot/cups
Cloning into '/var/lib/mock/f41-build-side-1-2749953-31015/root/chroot_tmpdir/scmroot/cups'...
$ git fetch origin d0eba90f305d32cbc0c51697915310dcfc427b5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cups
 * [new ref]         d0eba90f305d32cbc0c51697915310dcfc427b5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0eba90 Validate several IPP attributes and quote PPD localized string