$ git clone -n https://gitee.com/src-opencloudos-rpms/libbytesize.git /var/lib/mock/dist-oc9-build-120952-71506/root/chroot_tmpdir/scmroot/libbytesize
Cloning into '/var/lib/mock/dist-oc9-build-120952-71506/root/chroot_tmpdir/scmroot/libbytesize'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libbytesize
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59e7001 import libbytesize-2.9-6.tl4