$ git clone -n https://src.fedoraproject.org/rpms/tilix.git /var/lib/mock/f41-build-side-1-2958664-35629/root/chroot_tmpdir/scmroot/tilix
Cloning into '/var/lib/mock/f41-build-side-1-2958664-35629/root/chroot_tmpdir/scmroot/tilix'...
$ git fetch origin 745f4b822a60860e7eaff1e042e86f12dc4d48e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tilix
 * [new ref]         745f4b822a60860e7eaff1e042e86f12dc4d48e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 745f4b8 Rebuilt for ldc 1.39