The following two pages on worg both recommend using "git clone
g...@code.orgmode.org:bzg/org-mode.git” to clone the org repo.
When I tried this today, it asked me for a password. I was puzzled. I then
created an account on https://code.orgmode.org/ <https://code.orgmode.org/>,
added my ssh public key in the settings, and was able to clone the repo without
being bothered with the password.
If this is the expected method, may be the above two pages should mention this.