Oh, so all that TLS/SSL errors were because of this! I thought my PC's configuration was broken... Though there is a lesson in this, apart from politics etc.:

Oh, so all that TLS/SSL errors were because of this! I thought my PC's configuration was broken... Though there is a lesson in this, apart from politics etc.: if it's not public, don't put it on the net, e.g. set up a Raspberry Pi in your office with a static IP and use it as the DVCS server. Thus, what happens in the outer world does not disrupt your work, and if there is a problem or a need, you can sort it out.