$ git clone -n https://gitee.com/src-opencloudos-rpms/expat.git /var/lib/mock/dist-oc9-build-247708-83618/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-oc9-build-247708-83618/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin c69a6a3b9c96e656eba0c98dbd1064a993fc8ca5:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/expat
 * [new ref]         c69a6a3b9c96e656eba0c98dbd1064a993fc8ca5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c69a6a3 import expat-2.6.4-7.tl4