OpenShift S2I Build Fails with "Peer's certificate issuer has been marked as not trusted by the user"

Issue

• Cannot pull source from external Git repository

error: build error: fatal: unable to access 'https://github.com/openshift/ruby-ex.git/': Peer's certificate issuer has been marked as not trusted by the user.

• Our OpenShift install is behind a proxy which re-issues a new cert for external sites.
• The S2I build image does not have the proxy CA in place, does not trust the CA, can't download source code from github.com or internal gitlab repo
• Cloning or pulling source from a custom git repository and getting issuer is not recognized messages

Cloning "https://example.com/test/project.git " ...
error: fatal: unable to access 'https://example.com/test/project.git/':  Peer's Certificate issuer is not recognized.