The Athena locker for the website is sipb-www (/mit/sipb-www, which points to /afs/sipb.mit.edu/project/sipb-www).
The website used to use IkiWiki but we recently switched to Hugo.
Sorry that the repository still lives on scripts and not something friendlier like GitHub or Forgejo :(. It is convenient once it is setup, since it does not require a separate server and git push will update the live copy of the website at https://sipb.mit.edu
See the README there for more info
Cloning the repository
Since scripts uses kerberos for authentication, you have to install Kerberos. In the case of Linux and macOS, you can use your package manager.
Use kinit yourkerb and then you can clone the repository using
git clone --recurse-submodules ssh://sipbwiki@scripts-f30.mit.edu/mit/sipbwiki/website.git