[Beltalowda]

That 4GB figure is for a repo at git.lubar.me, a self-hosted git repo where – quoting the person running it – "I am the only person in the world using this Go module".

In this context, that seems like a lot. Of course the module mirror can't know about this context, but there are certainly a lot of scenarios where this is comparatively a lot of bandwidth. Not everyone is running beefy servers.

Seems like an exceedingly poor and unreasonable default, and it doesn't take much imagination to see how this could be improved fairly easily (e.g. scale to number of actual go gets would already be an improvement).