You mean... git? You can self-host git repo. It's quite storage- and transport-agnostic - you can host it over HTTP, SSH, NFS, SMB/CIFS and even FTP if you're

You mean... git? You can self-host git repo. It's quite storage- and transport-agnostic - you can host it over HTTP, SSH, NFS, SMB/CIFS and even FTP if you're into perverse things. Every commit has your name and email address, and if you want authentication you can sign those with your public key. And, well, you can send and receive patches using any means you want. The patch is just a text (usually) file.