Server side programs

Are git-receive-pack and git-upload-pack the only two binaries that get called directly over a SSH-tunnel?

The git tutorial explicitly mentions this for git-receive-pack. Several of the other docs (git-fetch-pack, git-peek-remote and git-clone-pack) mentions git-upload-pack. No other program from the git suite is mentioned as an immediate target for ssh connections.

The reason I'm asking is that I'm adding support for userrelative paths (git pull ssh://host:~user/somedir) and removing the possibilities to use a compromised but limited account for finding out what other useraccounts are available.