Just a friendly note: If you use the same technique as I i.e. local GIT repositories backed up on cloud, ALWAYS make sure there is still at least as much free space as the largest repo shallow clone.

It may happen that some really really archaic "commits" will disappear and git won't work as usual, but mostly you'll have an access to the branches, which you can diff against the master and make patches. Then just clone, make branches from patches and code happily ever after.

Also... you really really shouldn't push when you discover(git fsck --all) such an issue in your local repo, although I think git won't even allow you to do so.