I wanted to do some code stats for a repository. This line checks out old revisions by date and shows code stats:
git checkout `git rev-list -n 1 --before="2012-03-01" master`
Then, I ran cloc to count lines of code:
Its really easy to register the point in time as a git branch so that you can get back and count lines of code later:
git co -b 2012-03
You can always verify latest revision like so:
Git log -1
The combination of git and cloc makes it really simple to keep history of codebase changes.