title: Bitbucket clone freezes on the same large file
body: <p>I have a mercurial repo setup in bitbucket.
  I attempt to clone this repo using sourcetree (2.6.10.0) and https.
  The clone starts fine and i can see files being copied across to my machine.
  However when it attempts to clone a particular file, it comes to a stand still and errors (stream ended unexpectedly (got 449 bytes, expected 4096)).
  The only difference between this file and the other files is its size (60MB).
  I have tried using tortoise hg...i get the same error.</p>
  
  <p>Has a limit been added to the file size that bitbucket can clone?
  Is the issue with bitbucket or the clients that i've tried (sourcetree/tortoise hg)?
  Any ideas of how i can get around this issue?</p>