$ git clone -n https://gitee.com/opencloudos-stream/flann.git /var/lib/mock/dist-oc9-epol-build-115991-68000/root/chroot_tmpdir/scmroot/flann
Cloning into '/var/lib/mock/dist-oc9-epol-build-115991-68000/root/chroot_tmpdir/scmroot/flann'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/flann
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b12f56 update