prow/github/fakegithub/fakegithub.go
func (f *FakeClient) ListPRCommits(org, repo string, prNumber int) ([]github.RepositoryCommit, error) {
	k := fmt.Sprintf("%s/%s#%d", org, repo, prNumber)
	return f.CommitMap[k], nil
}
func (f *FakeClient) ListPRCommits(org, repo string, prNumber int) ([]github.RepositoryCommit, error) {
	k := fmt.Sprintf("%s/%s#%d", org, repo, prNumber)
	return f.CommitMap[k], nil
}
// ListPRCommits lists commits for a given PR.