You can clone with
HTTPS or Subversion.
Not sure why. Works correctly on the macbook air but not on my iMac 27". It sticks the windows about 5 pixels on the right of the edge of the screen, whatever keyboard shortcut I use.
Mavericks up to date, using dock on the left.
Actually doesn't work on my macbook air either. I thought it did but it works only on the 2nd monitor, not on the monitor of the mba itself.