Using TortoiseHg Synchronize, clicking "Pull" pulls down the 2nd most recent revision.
At the bottom of the Synchronize interface is a button, "Update to branch tip." Clicking this button pulls down the most recent revision.
What is happening here?
Command line hg tells this:
$ hg help pull
...
Pull changes from a remote repository to a local one.
...
-R is specified). By default, this does not update the copy of the
project in the working directory.
vs.
$ hg help up
...
Update the repository's working directory to the specified revision, or the tip of the current branch if none is specified.