git does not seem to be authenticating.  It keeps generating the message:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
fatal: The remote end hung up unexpectedly

I tried generating several keys.  I also followed the FAQ and information in the SCM.  However, there is no indication
of which e-mail address to use.

Information on the web is sparse (to  say the least) about troubleshooting the error.