$ git clone -n https://gitee.com/src-opencloudos-rpms/expat.git /var/lib/mock/dist-oc8-build-253855-84339/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-oc8-build-253855-84339/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin 294f3f5fa4a907cabd3c9c61e811fe6976836684:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/expat
 * [new ref]         294f3f5fa4a907cabd3c9c61e811fe6976836684 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 294f3f5 import expat-2.5.0-6.tl3