pull() {
  cmd="git fetch upstream "
  for var in "$@"
  do
    cmd="$cmd pull/$var/head:pullRequest$var"
  done
  echo $cmd
  $cmd

  for var in "$@"
    do
    git checkout pullRequest$var
    git rebase master
    if [[ $? -ne 0 ]]; then
        exit 1
    fi
    git checkout master
    git merge pullRequest$var
    git branch -D pullRequest$var
  done
}