$ hg update foo
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents
changeset:
branch: foo
user: Bryan O'Sullivan <bos@serpentine.com>
summary: Second commit
$ hg update bar
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg parents
changeset:
branch: bar
tag: tip
user: Bryan O'Sullivan <bos@serpentine.com>
summary: Third commit