Clone failure with git 1.8.3.1

Attempting to clone our repo with git 1.8.3.1 (Fedora 19) is consistently failing(sometimes gets up to 2/3 of the way through and hangs and eventually fails with a "fatal: The remote end hung up unexpectedly"

However using git 1.7.9.5 (Ubuntu 12.04) works as expected with the same ssh:// url.