http://bugs.winehq.org/show_bug.cgi?id=53155
--- Comment #13 from Serge S. Gulin gulin.serge@gmail.com --- Yep, it is known, but the issue above is a little different.
I was able to setup MSYS2 and get the shell but the issue is about another step.
It hangs on `pacman -Syyuu` from https://gitforwindows.org/install-inside-msys2-proper.
So, the whole full system upgrade stopped to work.