SITL with stable version of PX4 Firmware

Cloning repo, changing branch to stable and building the PX4 Firmware for Pixhawk is working perfectly but when I build with make posix_sitl_lpe gazebo I end up with errors. If I understand it correctly it’s because I lack some of gazebo files.
Using build_script works perfectly but it downloads master branch (beta version). Chaning branch to stable also generates errors when building SITL.

My question is: how to run SITL with stable version of Firmware? Is there any build_script that clones stable branches of all submodules…?