I was unable to successfully run 'make init-submodule'. I received an error when cloning testchipip.

To resolve this I had to edit /.git/config to update the url for the testchipip repo

IS:
url = git@github.com:ucb-bar/testchipip.git
SHOULD BE:
url = https://github.com/ucb-bar/testchipip.git