“Upgrade Network” error: stuck with SSL certificate verification

Question

When trying to update one Network/MU install, I got the following error.

Warning! Problem updating https://subdomain-A.example.com. Your server may not be able to connect to sites running on it. Error message: SSL: certificate subject name 'example.com' does not match target host name 'subdomain-A.example.com'

As I know that the certificate is valid, etc. I just need to somehow bypass the verification check from WP.