Impossible custom spawn position in sitl gazebo since v1.15.0

It is now impossible to start the sitl simulation from a custom position with the v1.15.0 and the commit bb53781b8f94fdc3b3d94c23dda429f0932c28fc.
Parameters SIM_GZ_HOME_LAT, SIM_GZ_HOME_LON, SIM_GZ_HOME_ALT have been erased. Do you know if an other solution exists to make a drone spawn at a specific location with the gazebo simulation ?