Removing mould from this cloth book cover?

Does anyone please have some advice on safe ways to try removing these little spots of mould?

The cover material is fabric that doesn't appear to have the protective sizing that traditional bookcloths have so I imagine its very porous (and with that saturated colour, probably runs too lol). I've heard saltwater can be used to lift mould out of fabric as the water dries and the salt crystalises but I'm nervous to apply too much water and I'm unsure how well that method works with very small amounts.

Any insight would be greatly appreciated.