$ git clone -n https://gitee.com/src-opencloudos-rpms/bsf.git /var/lib/mock/dist-oc9-build-48559-14595/root/chroot_tmpdir/scmroot/bsf
Cloning into '/var/lib/mock/dist-oc9-build-48559-14595/root/chroot_tmpdir/scmroot/bsf'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/bsf
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a99821 import bsf-2.4.0-2.tl4