From my experience, nobody teaches you Git properly in school. And once you get your first job, it is too late.
We had various lectures on languages models, math, algorithms, networking... absolutely nothing on git (I did my classes between 2008 and 2013, things might have changed now)
That sounds ridiculous to me... By the same logic, I could patent a car that is charged by USB (not very efficient, but eh, it's new !) and then nobody could build a car charged via USB ?
That activity look 100% to be from a paid employee to me. He works in the morning and does git maintenance in the afternoon like clockwork... Between 12 and 18... It might also have been multiple employee.
He didn't work on Christmas or new year eve which is extremely telling...
We had various lectures on languages models, math, algorithms, networking... absolutely nothing on git (I did my classes between 2008 and 2013, things might have changed now)