If you check the "baikal" home folder, using terminal, you will find bash_history.
Who configured the system copied and renamed the file "sgminer_300MHz_fix_NoHW", maybe it's a custom sgminer version, locked at 300 MHz speed and with the algos we already know.
When ready, baikal will release a new custom sgminer version, adding nist5 (and groestl) algo support.
So, maybe that someone was able to develope and run his own copy of custom sgminer on that hardware.