## set your git name and email
git config --global user.name "your username"
git config --global user.email "your email"
## then try to clone a repo
git clone <git-repo-url>
## after that if you are not loged in then git will ask for username and password
## provide the username and password (use personal access token insted of password)
## If you want to avoid providing a username and password every time, you can just store that username and password.
git config --global credential.helper store
## you can check the configaretion with this command
nano ~/.gitconfig
## The username and password will be saved in the file ~/.git-credentials. in the format
nano ~/.git-credentials
## You can also opt for cache to store the username and password instead of disk.
git config --global credential.helper cache