First, enable your authentication credentials, then set the secondary username.
After this, create a personal access token in your Visual Studio account, then copy that token '
Open your Git Bash and go to the cloned folder with your repository, enter the following command in order to make sure that it is storing the credentials properly and no repetitions are needed:
git config credential.helper store
git pull origin [your branch]
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After this, it will ask for the user name and password. So, simply you enter your username and token, acting as your password.