And nobody on the team had a reasonably fresh checkout of the repo on their local machine?
To put it bluntly, this story does not sound credible. It's also one of the first things you say in the pitch, which taints everything you write later. I would suggest focusing on what you do well, not in making up stories about data loss with what you perceive as the competition.
(It's especially odd when Git isn't the obvious competition; Perforce is.)