$ git clone -n https://gitee.com/src-opencloudos-rpms/HdrHistogram_c.git /var/lib/mock/dist-oc9-build-70038-47380/root/chroot_tmpdir/scmroot/HdrHistogram_c
Cloning into '/var/lib/mock/dist-oc9-build-70038-47380/root/chroot_tmpdir/scmroot/HdrHistogram_c'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/HdrHistogram_c
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 093e1a2 import HdrHistogram_c-0.11.8-1.tl4