The Mercurial Update dialog box enables you to synchronize your working directory with a selected changeset from your local repository.
You can access the Update dialog by choosing Versioning > Update from the main menu.
Choose from revisions: Select a revision from the drop-down field. Revisions are displayed containing revision numbers and corresponding changeset IDs in parentheses. Revisions are listed according to date (i.e., the most current revision is displayed by default).
In the Options pane, select the Do a Forced Update option to refresh your working copy to the most current revision in your local repository. Doing so overwrites any local changes you have made to your working copy.