$ git clone -n https://gitee.com/src-opencloudos-rpms/expat.git /var/lib/mock/dist-oc8-build-125919-75470/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-oc8-build-125919-75470/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin 18dd243b0fc77252d9bb97b7fb42d0b5ed225b9d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/expat
 * [new ref]         18dd243b0fc77252d9bb97b7fb42d0b5ed225b9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18dd243 import expat-2.2.5-17.tl3