$ git clone -n https://gitee.com/opencloudos-stream/xz.git /var/lib/mock/dist-ocs23-build-246059-23835/root/chroot_tmpdir/scmroot/xz
Cloning into '/var/lib/mock/dist-ocs23-build-246059-23835/root/chroot_tmpdir/scmroot/xz'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/xz
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 889e6df !3 【自动升级】xz 5.4.7 Merge pull request !3 from ocs-bot/master