Use the Repository Settings dialog to manage aliases for your remote repositories.
To call the dialog, click the ellipsis button in the Remote Repository box of the Synchronize dialog.

The dialog lists remote repositories and their aliases.
To add a new alias, click Add and enter the alias name and the path to the needed remote repository.
To delete an existing alias, select it in the list and click Remove.
To save changes and close the dialog, click OK. To close the dialog without saving changes, click Cancel.
See Also
Integration With Mercurial
Getting Changes from a Remote Repository to a Local Repository