AWS CodeCommit Error: git: 'credential-aws' is not a git command

I think the issue is in your .gitconfig file. Change it to below and it should work.

[credential]    
    helper = !aws codecommit credential-helper $@ 
    UseHttpPath = true  

By the way, if you are using a Bash emulator instead of the Windows command line, you must use single quotes instead of double quotes.

Let me know if this doesn't work.