Some sites might have a publically exposed .git folder. For instance, aimtell.io/.git/config. In that case, it's possible to pull the git repository and with some tools get all the commits and source files: https://github.com/internetwache/GitTools https://en.internetwache.org/dont-publicly-expose-git-or-how-we-downloaded-your-websites-sourcecode-an-analysis-of-alexas-1m-28-07-2015/