I need to do a branch merge between nfs41-gate and onnv-clone. And specifically, I want to not get the 'tip', but rather the tag for release 100. I found a good reference - Chapter 8 Managing releases and branchy development.

So I'll follow along with it. I need the tag:

[th199096@jhereg onnv-play]> hg tags
tip                             7782:716c23b2ce2e
onnv_100                        7757:bf4a45ecb669
onnv_99                         7613:e49de7ec7617
onnv_98                         7473:fad192e9bc57

It turns out I don't need much more:

[th199096@jhereg nfs41-100]> hg reparent ssh://onnv.eng//export/onnv-clone
[th199096@jhereg nfs41-100]> hg tags | more
tip                             7744:763bfa203d1a
closedv1                        7742:9fab48a31a4a
onnv_99                         7652:e49de7ec7617

So I haven't merged yet:

[th199096@jhereg nfs41-100]> hg pull -u -r onnv_100
pulling from ssh://onnv.eng//export/onnv-clone
searching for changes
adding changesets
adding manifests
adding file changes
added 64 changesets with 475 changes to 462 files (+1 heads)
not updating, since new heads added
(run 'hg heads' to see heads, 'hg merge' to merge)

The tag can be used as a revision!