$ git clone -n https://gitee.com/opencloudos-stream/firefox.git /var/lib/mock/dist-oc9-epol-build-65317-16665/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-epol-build-65317-16665/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/firefox
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 527990b !8 Rebuilt for llvm 17.0.6 Merge pull request !8 from luochenglcs/master