Checkout remote pull request

.profile

gcorpullrequest() {
  # gcorpullrequest 123  upstream
  # gcorpullrequest 124
  remote=origin

  echo "What do you want to call the local branch?"

  read branchname

  if [ $# = 2 ]; then
    remote=$2
  fi

  echo "fetching PR #$1 from $remote"
  echo "Do you want to continue?"
  select yn in "Yes" "No"; do
    case $yn in
      Yes ) break;;
      No ) return 0;;
    esac
  done

  git fetch $remote pull/$1/head:$branchname
  git checkout $branchname
}