If:

- you add and commit with the wrong email address in git, and
- your remote has a hook set up to prevent you from pushing with the bad address

Then you need to amend the author of your commit before push can succeed:

1. fix your email address in git config:

$ git config user.name "Your Name"
$ git config user.email "your@address.com"
$ git submodule foreach --recursive 'git config user.name "Your Name" && git config user.email "your@address.com"'

2. then do a rebase:

$ git rebase -i HEAD~1

# git brings up your editor.

3. in the editor, mark the commit as 'edit' then save and exit the editor

4. do an amend that resets the author now that your address is changed:

$ git commit --amend --reset-author

5. finish with a rebase:

$ git rebase --continue

# git says:
# Successfully rebased and updated refs/heads/master.