$ cd ..
$ hg clone scam-cousin scam-merge
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd scam-merge
$ hg pull -u ../scam-son
pulling from ../scam-son
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
not updating, since new heads added
(run 'hg heads' to see heads, 'hg merge' to merge)