If I host a web server, and the only access is the ssh port, how should anybody guess that I use it to host a git repo that you and I work on together? More is

If I host a web server, and the only access is the ssh port, how should anybody guess that I use it to host a git repo that you and I work on together? More is not needed. Might even work on public clouds since you shouldn't really raise any attention this way.