$ hg rebase -s 45368 -d stable --dry-run
starting dry-run rebase; repository will not be changed
rebasing 45368:f7b61b78584e "xxx-doc: fix typos in upgrade and revlog"
dry-run rebase completed successfully; run without -n/--dry-run to perform this
$ hg diff
$ hg st
There was a noticeable pause after the suggestion to run without -n, so that
may have been when it happened.