OTOH, it must be nice to know that even if your house blows up (hopefully when you're not in it), your life's work is mirrored and backed up on millions of comp

OTOH, it must be nice to know that even if your house blows up (hopefully when you're not in it), your life's work is mirrored and backed up on millions of computers. All he lost were some pull requests which have to be re-sent. The submitters know who they are and if the changes don't show up in a day they just send another email - no harm, no foul.