$ git clone -n https://gitee.com/src-opencloudos-rpms/expat.git /var/lib/mock/dist-oc9-build-61411-16463/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-oc9-build-61411-16463/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/expat
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37644fd import expat-2.5.0-2.tl4