[[!comment format=mdwn
 username="http://joeyh.name/"
 nickname="joey"
 subject="comment 1"
 date="2013-04-22T20:00:12Z"
 content="""
1. Use `git log --stat` to find the commit that changed your file `Z.7z`
2. Use `git revert` to revert that commit

That will put things back the way they were.

You should then investigate what caused the bad commit to be made. It seems to have involved the file being reset to be 0 bytes in size.
"""]]
