$ git clone -n https://gitee.com/src-opencloudos-rpms/xdg-user-dirs.git /var/lib/mock/dist-oc9-build-45540-14591/root/chroot_tmpdir/scmroot/xdg-user-dirs
Cloning into '/var/lib/mock/dist-oc9-build-45540-14591/root/chroot_tmpdir/scmroot/xdg-user-dirs'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xdg-user-dirs
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 548c0f1 import xdg-user-dirs-0.17-3.tl4