$ git clone -n https://gitee.com/src-opencloudos-rpms/libtevent.git /var/lib/mock/dist-oc9-build-128596-77391/root/chroot_tmpdir/scmroot/libtevent
Cloning into '/var/lib/mock/dist-oc9-build-128596-77391/root/chroot_tmpdir/scmroot/libtevent'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libtevent
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81f3c1d import libtevent-0.16.0-3.tl4