github password policy

[Thomas Wolff]

github have changed their authentication policy not to allow passwords 
anymore.
So they are asking maintainers to acquire another kind of password (a 
"token"), which I did a while ago.
But they refuse to support users with the transition, there is no 
"plug-and-play" howto available, except for those who are willing to 
dive into details of authentication stuff and spend a few study hours on 
that useless policy change.
As I cannot update mintty anymore right now from the git command line, 
is any maintainer here impacted by the same issue and can help out with 
some advice how to get rid of this nuisance?
Thanks
Thomas