$ git clone -n https://gitee.com/wency_cn/unbound_1770892177.git /var/lib/mock/dist-an23-build-514165-75110/root/chroot_tmpdir/scmroot/unbound_1770892177
Cloning into '/var/lib/mock/dist-an23-build-514165-75110/root/chroot_tmpdir/scmroot/unbound_1770892177'...
$ git fetch origin db12a428d4ca01f8835911a8e365385a3cc39630:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/unbound_1770892177
 * [new ref]         db12a428d4ca01f8835911a8e365385a3cc39630 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db12a42 Update code from upstream