I try to install Pywikibot with git, following https://www.mediawiki.org/wiki/Manual:Pywikibot/Development and https://www.mediawiki.org/wiki/Gerrit/Tutorial When it comes to git clone, I keep getting this:
Cloning into 'core'... fatal: unable to access 'https://gerrit.wikimedia.org/r/pywikibot/core.git/': SSL certificate problem: certificate has expired
Is it possible? I can't believe. Or is there another problem causing this message?