You can clone with
HTTPS or Subversion.
It might be handy to be able to ask "what commit goes with this tarball I have here?" without having to try and parse the version. That information is available in the commit log as git-cpan-file but it could also be a tag.
Done. Each release will contain a tag for the CPAN path to the tarball. For example ETHER/Acme-LookOfDisapproval-0.005.tar.gz