You can clone with
HTTPS or Subversion.
I just wanted to post back that I figured out the issue.
The file download is passed through a php file instead being a direct download. For some reason the way the php file checks the admin login cookie it doesn't work with several of the major download managers for firefox even though they pass the same cookie.
Confirmed not working through: FlashGot, DownThemAll, Leech...probably most.
If you disable the download manager, you no longer download the wp-login.php file itself.
Hope that helps.
Added a few FAQs. Closes #7.