$ git clone -n https://gitee.com/src-opencloudos-rpms/libevent.git /var/lib/mock/dist-oc9-build-250063-83935/root/chroot_tmpdir/scmroot/libevent
Cloning into '/var/lib/mock/dist-oc9-build-250063-83935/root/chroot_tmpdir/scmroot/libevent'...
$ git fetch origin 3645bdd5c0db52d783fa05e44c75336b5a868cc4:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libevent
 * [new ref]         3645bdd5c0db52d783fa05e44c75336b5a868cc4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3645bdd import libevent-2.1.12-8.tl4