You are using Github as remote git repository? This article explains how to use an access token to authenticate yourself instead of username+password.
On Github.com, navigate to the setting menu of your Github profile. From there, choose “Developer Settings” and then “Personal Account Tokens”.
Here you are able to create a personal account token:
create new token
Select scope “repo”.
The token you created is presented to you. Save it to you credentials store (like KeePass).
The token is part of the remote url of the repository. The URL has this form:
e.g. for a repo of mine and suppose the token is “token1234567890”:
When you are using the token in the remote URL you won’t be prompted for your password.
Good luck with your repo on Github!