Question about git: merging to gccgo branch

[Ian Lance Taylor <iant at golang dot org>]

I'm trying to merge trunk revision
7c46e71d016c86971ac26c6fa38d76482859f296 to the gccgo branch.  I did
this by checking out the branch ("git checkout origin/devel/gccgo")
and running "git merge master".

I'm not sure whether I should keep reporting this kind of operation to
gcc-patches now that we've switched to git, but that is not my
question.

After testing the result of "git merge master", I run "git push origin
HEAD:devel/gccgo" to push the result to gcc.gnu.org.  That fails with
this:

git push origin HEAD:devel/gccgo
Enumerating objects: 4069, done.
Counting objects: 100% (3017/3017), done.
Delta compression using up to 8 threads
Compressing objects: 100% (1517/1517), done.
Writing objects: 100% (1692/1692), 1.37 MiB | 4.58 MiB/s, done.
Total 1692 (delta 1163), reused 154 (delta 113), pack-reused 0
remote: Resolving deltas: 100% (1163/1163), completed with 979 local objects.
remote: *** This update introduces too many new commits (581), which would
remote: *** trigger as many emails, exceeding the current limit (100).
remote: *** Contact your repository adminstrator if you really meant
remote: *** to generate this many commit emails.
remote: error: hook declined to update refs/heads/devel/gccgo
To git+ssh://gcc.gnu.org/git/gcc
 ! [remote rejected]         HEAD -> devel/gccgo (hook declined)
error: failed to push some refs to 'git+ssh://ian@gcc.gnu.org/git/gcc'

I don't want to send 581 e-mails.  I would be happy not sending any
e-mails at all.  I would also be happy sending 1 e-mail.

What should I do?

Thanks.

Ian