$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox /var/lib/mock/dist-oc8-build-38907-12987/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-build-38907-12987/root/chroot_tmpdir/scmroot/firefox'...
$ git reset --hard origin/oc8
HEAD is now at cce2901 debranding for OpenCloudOS