[openstack-nova] maint: add some more info to update-patches.txt

[Pádraig Brady]

commit 836f0d32d39e7b26acfee11a83c745a6d3437390
Author: Pádraig Brady <P at draigBrady.com>
Date:   Wed Apr 18 22:06:37 2012 +0100

    maint: add some more info to update-patches.txt

 update-patches.txt |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/update-patches.txt b/update-patches.txt
index fbc0446..7a76cfa 100644
--- a/update-patches.txt
+++ b/update-patches.txt
@@ -55,6 +55,8 @@ git log --oneline # to pick sha of commit _before_ first commit to consider reba
 git rebase --onto essex-3 69fcb2df # use --interactive if want to edit/delete commits
     First, rewinding head to replay your work on top of it...
     Applying: Ensure we don't access the net when building docs
+Note more generally rebase --onto a branch rather than a tag, for e.g.:
+    git rebase -i --onto remotes/openstack/stable/essex bbb021c8
 
 2. Pick new patches after essex-3