$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-build-36919-12041/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-build-36919-12041/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard origin/oc8
HEAD is now at 4ad69d5 rebrand