$ git clone -n https://gitee.com/src-opencloudos-rpms/tracer /var/lib/mock/dist-oc8-build-74786-51301/root/chroot_tmpdir/scmroot/tracer
Cloning into '/var/lib/mock/dist-oc8-build-74786-51301/root/chroot_tmpdir/scmroot/tracer'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tracer
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11ce911 import tracer-1.1-1.tl3