certificate problem accessing https://source.winehq.org ?

[Dan Kegel]

$ git clone https://source.winehq.org/git/wine.git newwine-git
Cloning into 'newwine-git'...
error: server certificate verification failed. CAfile:
/etc/ssl/certs/ca-certificates.crt CRLfile: none while accessing
https://source.winehq.org/git/wine.git/info/refs

Maybe that's related to the big fat red warning Chrome gives when
visiting https://source.winehq.org/

Happily, just leaving off the 's' is a workaround.