Since some time back, we have deployed the git server side http handler on
git.postgresql.org, so the instructions currently on the site are incorrect in saying that git:// is faster than https://. In fact, we have some reports and testing that https:// can be significantly faster (due to other reasons). https is also a protocol that's a lot less likely to run into firewall issues etc.
Based on that, I propose the following patch which both moves https:// up to being the first-hand choice for protocol, and removes the references to it being slower.