gistfile1.txt

$ git clone github:lenary/guides.git
Cloning into guides...
remote: Counting objects: 255, done.
remote: Compressing objects: 100% (216/216), done.
remote: Total 255 (delta 111), reused 163 (delta 35)
Receiving objects: 100% (255/255), 1.49 MiB | 564 KiB/s, done.
Resolving deltas: 100% (111/111), done.

$ cd guides
$ git remote -v
origin	git://github.com/lenary/guides.git (fetch)
origin	git@github.com:lenary/guides.git (push)

$ cd ..
$ git clone gist:806037
Cloning into 806037...
remote: Counting objects: 3, done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (3/3), done.

$ cd 806037
$ git remote -v
origin	git://gist.github.com/806037 (fetch)
origin	git@gist.github.com:806037 (push)

gitconfig.ini

[url "git@github.com:"]
  insteadOf = "gh:"
  pushInsteadOf = "github:"
  pushInsteadOf = "git://github.com/"
[url "git://github.com/"]
  insteadOf = "github:"
[url "git@gist.github.com:"]
  insteadOf = "gst:"
  pushInsteadOf = "gist:"
  pushInsteadOf = "git://gist.github.com/"
[url "git://gist.github.com/"]
  insteadOf = "gist:"
[url "git@heroku.com:"]
  insteadOf = "heroku:"