Git for Windows is a powerful tool for interacting with CI/CD pipelines.  There are specific components that should be avoided during the installation when working with Amazon AWS’s CodeCommit service.  More Specifically, the Git Credential Manager component should not be installed if you plan to use Git for Windows with Amazon's CodeCommit source code repository.

I ran into access denied errors a while back with Git and CodeCommit.  I'd read the advice on Amazon's troubleshooting website (https://docs.aws.amazon.com/codecommit/latest/userguide/troubleshooting-ch.html) but to be honest, it didn't click with me.  It wasn't until I had the errors and re-read the instructions, that it started to set in that I needed to reinstall Git and change the option.