javer/hhvm-vagrant-vm — pull request #16 by joshdifabio (2014-06-23 11:24:20+00:00)
Title: Use shallow clones for speed.

Suggest using shallow git clones as they are much faster on large repos with have had lots of commits (HHVM repo has over 10,000 commits). I don't believe the limitations imposed by shallow clones should be an issue here as we only clone the HHVM & cURL source in order to make builds, not to commit & push.