$ git clone -n https://src.fedoraproject.org/rpms/tilix.git /var/lib/mock/f40-build-1209476-22540/root/chroot_tmpdir/scmroot/tilix
Cloning into '/var/lib/mock/f40-build-1209476-22540/root/chroot_tmpdir/scmroot/tilix'...
$ git fetch origin 13a29d5e40b1cd853f6c29e24ab62250f6e2440c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tilix
 * [new ref]         13a29d5e40b1cd853f6c29e24ab62250f6e2440c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13a29d5 Apply upstream patch to fix failing test case