src/client/pfs.go
func (c APIClient) BlockCommit(repoName string, commitID string) (*pfs.CommitInfo, error) {
	return c.inspectCommit(repoName, commitID, pfs.CommitState_FINISHED)
}
func (c APIClient) BlockCommit(repoName string, commitID string) (*pfs.CommitInfo, error) {
	return c.inspectCommit(repoName, commitID, pfs.CommitState_FINISHED)
}
// BlockCommit returns info about a specific Commit, but blocks until that
// commit has been finished.