You can clone with
HTTPS or Subversion.
I wanna some new feature in the new version, such as enable function scope ununsed.
But I found that jshint version on npmjs.org is only 0.9.1, it's too old and has no feature I wanted.
Please publish the newest stable version for npm.
The version you are looking for is a release candidate. npm can install things from a tarball, so you can actually install the tarball of rc3 if you like.
npm install https://github.com/jshint/jshint/archive/1.0.0-rc3.tar.gz
You can also add it to your package.json like