$ git clone -n https://gitee.com/wenyuzifang/radvd_1766383135.git /var/lib/mock/dist-an23-build-498653-74683/root/chroot_tmpdir/scmroot/radvd_1766383135
Cloning into '/var/lib/mock/dist-an23-build-498653-74683/root/chroot_tmpdir/scmroot/radvd_1766383135'...
$ git fetch origin 3767d623765976de21982472b7d4eec0a7b2d312:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/radvd_1766383135
 * [new ref]         3767d623765976de21982472b7d4eec0a7b2d312 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3767d62 Update code from upstream