vc-rollback

vc-rollback is an interactive autoloaded compiled Lisp function in `vc.el'.

It is bound to C-x v c, <menu-bar> <tools> <vc> <undo>.

(vc-rollback)

Roll back (remove) the most recent changeset committed to the repository.
This may be either a file-level or a repository-level operation,
depending on the underlying version-control system.