$ git clone -n https://gitee.com/src-opencloudos-rpms/tracker.git /var/lib/mock/dist-oc9-build-122906-72518/root/chroot_tmpdir/scmroot/tracker
Cloning into '/var/lib/mock/dist-oc9-build-122906-72518/root/chroot_tmpdir/scmroot/tracker'...
$ git fetch origin 0d94c21f64a3e68eb0c1df5282e05f067a3f39f7:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tracker
 * [new ref]         0d94c21f64a3e68eb0c1df5282e05f067a3f39f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d94c21 import tracker-3.5.3-6.tl4