What does git update-server-info do?

Question

What does git update-server-info do? How do I know if I need it? The manual says:

A dumb server that does not do on-the-fly pack generations must hav

Answer 1

Dumb server basically means accessed over HTTP. So if you access your Git repository over http: or https: URLs, you need the update-server-info business, otherwise (git:, ssh:, etc.) you don't need it.