From August 13, 2021, Github is no longer accepting account passwords when authenticating Git operations. You need to add PAT (Personal Access Token) instead, you can follow the below method to add PFA on your system

Create Personal Access Token on Github

From your Github account, go to Settings => Developer Settings => Personal Access Token => Generate New Token (Give your password) => Fillup the form => click Generate token => Copy the generated Token, it will be something like ghp_sFhFsSHhTzMDreGRLjmks4Tzuzgthdvfsrta

For Linux based OS 

For Linux, You need to configure the local GIT client with a username and email address,

$ git config --global "your_github_username"
$ git config --global "your_github_email"
$ git config -l

Once GIT is configured, we can begin using it to access GitHub. Example :

$ git clone
> Cloning into `Spoon-Knife`...
$ Username for '' : username
$ Password for '' : give your personal access token here

Now cache the given record in your computer to remembers the token :

$ git config --global credential.helper cache

If needed, anytime you can delete the cache record by :

$ git config --global --unset credential.helper
$ git config --system --unset credential.helper

Now try to pull with -v to verify

$ git pull -v

If already configured previously then need to use token instead of password

By toihid