$ git clone -n https://gitee.com/ocs-upgrade/xz.git /var/lib/mock/dist-ocs23-build-245338-23534/root/chroot_tmpdir/scmroot/xz
Cloning into '/var/lib/mock/dist-ocs23-build-245338-23534/root/chroot_tmpdir/scmroot/xz'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/xz
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8123c38 Upgrade to version 5.4.7