$ git clone -n https://gitee.com/src-opencloudos-rpms/expat.git /var/lib/mock/dist-oc8-build-229764-81392/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-oc8-build-229764-81392/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin 6dde9f0ebac505a8de0332f69a0f033b206b986f:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/expat
 * [new ref]         6dde9f0ebac505a8de0332f69a0f033b206b986f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6dde9f0 import expat-2.5.0-1.tl3