You can clone with
HTTPS or Subversion.
According to multiple players on reddit, it appears as though LOVE is not properly loading the game on OSX Mavericks.
Does anyone have Mavericks yet? I was going to wait to upgrade, but if no one else has it I'll take the plunge (this is me)
Thankfully the LOVE devs have released a version of the Mac app that works with Mavericks. I'm upgrading to see if it works.