$ git clone -n https://gitee.com/src-opencloudos-rpms/xz.git /var/lib/mock/dist-oc9-build-175270-79901/root/chroot_tmpdir/scmroot/xz
Cloning into '/var/lib/mock/dist-oc9-build-175270-79901/root/chroot_tmpdir/scmroot/xz'...
$ git fetch origin 115e3a3225131264a3efa4b1e75f710ebae12213:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xz
 * [new ref]         115e3a3225131264a3efa4b1e75f710ebae12213 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 115e3a3 import xz-5.4.7-6.tl4