In job configuration we are trying to pass an account to be the login for the Bitbucket repo but have found that the service account running Jenkins is being passed regardless of the specified account passed for the job.

Here is an example of the log showing the wrong account being passed:

gateway.git/info/refs HTTP/1.1" c.a.s.i.s.s.PluginAuthenticationProvider SVC-Hudson-Prod: Authentication failed; user is not licensed 

The account to be passed is svc-build-prod