.gitconfig

# Put this in your .gitconfig
[url "ssh://[email protected]/sandbox/"]
    insteadOf = "dos:"
[url "ssh://[email protected]/project/"]
    insteadOf = "do:"

cmdline.txt

# And now you can clone a drupal project like this:
$ git clone do:views
Cloning into views...
remote: Counting objects: 29661, done.
remote: Compressing objects: 100% (9175/9175), done.
remote: Total 29661 (delta 22818), reused 26859 (delta 20372)
Receiving objects: 100% (29661/29661), 11.58 MiB | 952 KiB/s, done.
Resolving deltas: 100% (22818/22818), done.

# Or clone a sandbox like this:
git clone dos:sdboyer/1072352
Cloning into 1072352...
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.

# And then they're WRITEABLE! :)