How to Configure GIT User Details

$ git config --global user.name "Mona Lisa"
$ git config user.name
> Mona Lisa

$ git config --global user.email "email@domain.com"
$ git config user.email
> email@domain.com

If you want to update the user details of a particular project, simply remove –global

How to Disconnect a Project or Folder From GIT Repository

rm -rf .git