add commit ref to PRs
add commit ref to PRs

joerocca/GitHawk,rnystrom/GitHawk,joerocca/GitHawk,rnystrom/GitHawk,joerocca/GitHawk,joerocca/GitHawk,rnystrom/GitHawk,joerocca/GitHawk,rnystrom/GitHawk,rnystrom/GitHawk,joerocca/GitHawk