$ git clone -n https://src.fedoraproject.org/rpms/4ti2.git /var/lib/mock/f42-build-side-1-3568014-46743/root/chroot_tmpdir/scmroot/4ti2
Cloning into '/var/lib/mock/f42-build-side-1-3568014-46743/root/chroot_tmpdir/scmroot/4ti2'...
$ git fetch origin d57c2f3bce52c29d5d0fbf8fc71c1815755db56c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/4ti2
 * [new ref]         d57c2f3bce52c29d5d0fbf8fc71c1815755db56c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d57c2f3 Version 1.6.12