How can I reset or revert a file to a specific revision?

Question

I have made some changes to a file which has been committed a few times as part of a group of files, but now want to reset/revert the changes on it back to a previous versio

Answer 1

You can use any reference to a git commit, including the SHA-1 if that's most convenient. The point is that the command looks like this:

git checkout [commit-ref] -- [filename]