title: How can I search a word in Git repo over the whole history?
body: <p>Suppose I remember that I saved a word <code>"XYZword"</code> to some file in a repo but it got killed and I can only remember the initial part <code>"XYZ"</code> but nothing about the time or file. How can I grep this <code>"XYZ"</code> over the whole history?</p>