$ git clone -n https://src.fedoraproject.org/rpms/tilibs.git /var/lib/mock/f41-build-side-1-2670636-29060/root/chroot_tmpdir/scmroot/tilibs
Cloning into '/var/lib/mock/f41-build-side-1-2670636-29060/root/chroot_tmpdir/scmroot/tilibs'...
$ git fetch origin 7338b3fafc1910f866bae5632c24d98f158fd714:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tilibs
 * [new ref]         7338b3fafc1910f866bae5632c24d98f158fd714 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7338b3f convert GPLv2+ license to SPDX