$ git clone -n https://gitee.com/src-opencloudos-rpms/libXxf86vm.git /var/lib/mock/dist-oc9-build-70639-47457/root/chroot_tmpdir/scmroot/libXxf86vm
Cloning into '/var/lib/mock/dist-oc9-build-70639-47457/root/chroot_tmpdir/scmroot/libXxf86vm'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libXxf86vm
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8d6353 import libXxf86vm-1.1.5-1.tl4