At the end of last year, I was contacted by a dev who said something like

Wow, you have an impressive GitHub profile.

I won't lie, it's always good for the ego when someone found your work useful.

But here he had something else in mind, what he meant is that my GitHub contribution graph looked very green

You even work on week-ends !

God forbid no, I have a life!

What actually happened is that I write a lot and wants all my rumblings to be safe at any point of time.

In practice I write in Obsidian, the best thing since slice bread for me. And it was obsidian-git, running every 10 minutes or so, who was keeping my GitHub vanity metrics very green.

Can I become a time traveler and do that one year ago ?

Yes, git has you covered

git add .
git commit --date "10 days ago" -m "Committed by a time traveler"

Can I do that fast as promised in the title ?

Yes, clone my repository

Run the script run.sh

Create a new empty repository timetraveler on GitHub and push your new local repository there.

And in no time, you will have perfect GitHub vanity metrics just like me