# send a PR with your last commit to the author's email
git request-pull HEAD public-origin | mail author@example.com -s "PR: Add thing to repo"

# send a PR with your last 5 commits to the project's mailing
# list, including the patch
git request-pull -p HEAD~5 public-origin | \
  mail list@example.com -s "PR: Add another thing to repo"

# send every commit that is new in "other-branch"
git request-pull master public-origin other-branch | \
  mail list@example.com -s 'PR: All commits from my "other-brach"'