$ git clone -n https://gitee.com/src-opencloudos-rpms/bison.git /var/lib/mock/dist-oc9-build-120543-71374/root/chroot_tmpdir/scmroot/bison
Cloning into '/var/lib/mock/dist-oc9-build-120543-71374/root/chroot_tmpdir/scmroot/bison'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/bison
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b288a54 import bison-3.8.2-4.tl4