How do I get the raw version of a gist from github?

And yet there is, look for the raw button (on the top-right of the source code).

The raw URL should look like this:

https://gist.githubusercontent.com/{user}/{gist_hash}/raw/{commit_hash}/{file}

Note: it is possible to get the latest version by omitting the {commit_hash} part, as shown below:

https://gist.githubusercontent.com/{user}/{gist_hash}/raw/{file}