$ git clone -n https://gitee.com/opencloudos-stream/firefox.git /var/lib/mock/dist-ocs23-build-112644-7362/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-ocs23-build-112644-7362/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 314df30 !7 Update to 115.5.0 Merge pull request !7 from doriscchao/master