$ git clone -n https://src.fedoraproject.org/rpms/toolbox.git /var/lib/mock/f42-build-side-1-3585192-46903/root/chroot_tmpdir/scmroot/toolbox
Cloning into '/var/lib/mock/f42-build-side-1-3585192-46903/root/chroot_tmpdir/scmroot/toolbox'...
$ git fetch origin 63c067cd193cf43db8e33524c4176c2e8c666c7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/toolbox
 * [new ref]         63c067cd193cf43db8e33524c4176c2e8c666c7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63c067c TMT: Prevent Bats from hanging when tearing down the test suite