hmm need some more hints
which miner software from where?
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.
smell fake ... scam coming , he probably ask you money to learn you ahgaha