You're being down voted because you overlooked the fact that the parent poster is unable to open the document at all. We're not talking lost changes here, we're

You're being down voted because you overlooked the fact that the parent poster is unable to open the document at all. We're not talking lost changes here, we're talking about not being able to open the document at all, so not only did he lose the changes since the last save, but he had to go to a backup (git version) and recover the document from there.