git log? WTF

Why is GitHub showing all these people as contributors? What did I do ~2012 to mix my history with some other project? See https://github.com/ff6347/ff6347.github.io/graphs/contributors

git log --format='%aN' | sort -u

Abhijeet Kumar
Alessio Caiazza
Alistair Hutchison
Andrea Schiavini
Anton Vattay
Brandon Philips
Darren Jeacocke
Fabian Morón Zirfas
Fabian Morón Zirfas
Jade
Jade Dominguez
James Fleeting
Jesse Chan-Norris
Kori Roys
Lukas Knuth
Martijn Pieters
Matt Swanson
Michael-Keith Bernard
Pradeep Nayak
Renovate Bot
Simon Starr
Stephen Ball
Tommaso Visconti
Yuya Saito
christine
dependabot[bot]
elephant
fabianmoronzirfas
fabiantheblind
ff6347
fmoronzirfas
greenkeeper[bot]
jayraj

After some digging I found that as the git noob that I was then I used some jekyll-bootstrap repo and did not remove the .git folder or something like that. ¯\_(ツ)_/¯

Also I had a lot of different names in my .gitconfiguser.name over the years.