Download here on the chrome web store
Open a browser and log in to your GIT server (eg GitLab). This should give you an Azure login page, afterwards you'll be logged in to your server.
Click the cookies.txt icon in your browser, then choose to download the cookies for the tab that has your GIT server.
Open a terminal and type:
git config --global http.cookieFile ~/path/to/cookies.txt
You should now be able to clone/push/pull. You may need to repeat steps 2 and 3 when your session expires (just overwrite the old cookies.txt).