Add pull request repos to a cloned repo directory easily

gistfile1.awk

function add_pr_remotes() {
    mv .git/config .git/config-orig
    
    awk '/remote "origin"/  {
        print $0
        getline;
        print $0
        getline;
        print $0
        print "\tfetch = +refs/pull/*/head:refs/remotes/origin/pr/*"
    }1' .git/config-orig > .git/config
  
    git fetch origin
}

# After that you can `gco pr/2` to review the code in pr2.