That just seem the sgminer listing , may be nothing to do with baikal.
Actually it does. This is the source code of the sgminer that has been customized by Baikal. Unfortunately even if you could compile your very own sgminer it wouldn't be enough without modifying the firmware of the microcontroller.
I'd like it to be true, but x10 onboard chips must support and match sgminer algos, otherwise I think you will see no accepted shares.
That's right. Otherwise it would be too easy. But at least you have a chance if you know what you are editing in the firmware's binary file.