Hi @ganncamp ,
Thank you for your response.
The problem is git installation is not configured to accept all valid CA certs. In this case, git does not accept Thawte -> DigiCert chain certs. The soltion is adding your cert chain to the file /etc/pki/tls/certs/ca-bundle.crt
Then i’ve been able to clone using multibranch and github branch source.
Tip: If you don’t know how to get the cert, go to your github instance, check on lock address bar and make sure to download PEM (chain) cert.
Special thanks to Nadeem Jamali’s anwer: Unable to resolve "unable to get local issuer certificate" using git on Windows with self-signed certificate - Stack Overflow
Best regards.