-- If sending later revision of a patch, add all the tags - ack, r-b,
- Cc: mesa-stable and/or other. This provides reviewers with quick
- feedback if the patch has already been reviewed.
+- When updating a merge request add all the tags (``Acked-by:``, ``Reviewed-by:``,
+ ``Fixes:``, ``Cc: mesa-stable`` and/or other) to the commit messages.
+ This provides reviewers with quick feedback if the patch has already
+ been reviewed.
+
+.. _fixes:
+
+The ``Fixes:`` tag
+------------------
+
+If a patch addresses a issue introduced with earlier commit, that
+should be noted in the commit message. For example::
+
+ Fixes: d7b3707c612 "util/disk_cache: use stat() to check if entry is a directory"
+
+You can produce those fixes lines by running this command once::
+
+ git config --global alias.fixes "show -s --pretty='format:Fixes: %h (\"%s\")'"
+
+After that, using ``git fixes <sha1>`` will print the full line for you.
+
+The stable tag
+~~~~~~~~~~~~~~
+
+If you want a commit to be applied to a stable branch, you should add an
+appropriate note to the commit message.
+
+Using a ``Fixes:`` tag as described in :ref:`Patch formatting <formatting>`
+is the preferred way to nominate a commit that should be backported.
+There are scripts that will figure out which releases to apply the patch
+to automatically, so you don't need to figure it out.
+
+Alternatively, you may use a "CC:" tag. Here are some examples of such a
+note::
+
+ CC: 20.0 19.3 <mesa-stable>
+
+Using the CC tag **should** include the stable branches you want to
+nominate the patch to. If you do not provide any version it is nominated
+to all active stable branches.