$ git clone -n https://gitee.com/opencloudos-stream/pdns.git /var/lib/mock/dist-oc9-epol-build-233558-81881/root/chroot_tmpdir/scmroot/pdns
Cloning into '/var/lib/mock/dist-oc9-epol-build-233558-81881/root/chroot_tmpdir/scmroot/pdns'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/pdns
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a3b21a !2 Rebuilt for yaml-cpp Merge pull request !2 from epol/master