How do I update my forked repo using SourceTree?

Question

First, set up the parent repo:

1. Open your forked repo in SourceTree.
2. Select Repository ➫ Repository Settings… in the menu (or press ⇧⌘,).
3. In the Remotes pane, press Add.
4. Enter any name you like (often upstream or master) and the URL / path to the parent repo.
5. Press OK, then OK.

Now, to update:

1. Select Pull in the toolbar.
2. In the "Pull from repository" drop-down, switch from your fork to the repo you just added.
3. Press OK.
4. (Optional) Once you pull, you may want to push any new content up to the server.