Funnily enough this happened to me.

Earlier in my career I had a very intense, productive working day and then blundered a rebase command, deleting all my data.

Rewriting took only about 20 minutes.

However, like an idiot, I deleted it again, in the exact same way!

This time I had the muscle memory for which files to open and where to edit, and the whole diff took about 5 minutes to re-add.

On the way out to the car park it really made me pause to wonder what on earth I had been doing all day.