You'd think it would be `hg id`, but it doesn't work without connection to remote repository and is extremely slow with large repositories with uncommited chang

You'd think it would be `hg id`, but it doesn't work without connection to remote repository and is extremely slow with large repositories with uncommited changes, so it's not the correct answer. --debug option also prints info other than hash and can't be customized. >Mercurial logs are also easy to customize. I wanted to customize logging string so that it shows (sequential commit id) - (other stuff), but there's no way to make sequential commit id to line up neatly when it goes from 9 to 10, or from 99 to 100. So making a pretty one-line log is impossible. Maybe it was fixed since then, I wouldn't know.