Ask HN: How do you keep track of your experiment scripts?

When doing research I often write a single script and then run it multiple times, each time tweaking some part of the script or adjusting constants. I need to keep track of all of these versions to be able to reproduce the results.

Currently I am making sure that before each experiment, the current state of the code is commited to git and I tag it with experiment's name. If I need to expand on past experiment I branch out from a commit in history.

I would appreciate some insights from other people on how they handle this.