Server Development

I am knew to modded minecraft but familiar to vanilla, i am trying to figure out how to update sponge in a way. Example, i want to use the sponge recommended build but lets say a bug popped up, Example HERE, how do i patch this bug without updating sponge to a experimental build or do i absolutely have to update. Thanks in advanced <3

You could always make a custom build with specific fixes applied, but that is ‘not for the faint at heart’

How would you go about doing that?