I have a local git repository with two remotes ('origin' is for internal development, and 'other' is for an external contractor to use). The master branch in my local repository tracks the master in 'origin', which is correct. I also have a branch 'external' which tracks the master in 'other'. The problem I have now is that my master brach ALSO wants to push to the master in 'other' as well, which is an issue. Is there any way I can specify that the local master should NOT push to other/master?

I've already tried updating my .git/config file to include:

[branch "master"]
    remote = origin
    merge = refs/heads/master
[branch "external"]
    remote = other
    merge = refs/heads/master
[push]
     default = upstream

But remote show still shows that my master is pushing to both remotes:

toko:engine cmlacy$ git remote show origin
Password: 
* remote origin
  Fetch URL: <REPO LOCATION>
  Push  URL: <REPO LOCATION>
  HEAD branch: master
  Remote branches:
    master              tracked
    refresh-hook        tracked
  Local branch configured for 'git pull':
    master merges with remote master
  Local ref configured for 'git push':
    master pushes to master (up to date)

Those are all correct.

toko:engine cmlacy$ git remote show other
Password: 
* remote other
  Fetch URL: <REPO LOCATION>
  Push  URL: <REPO LOCATION>
  HEAD branch: master
  Remote branch:
    master tracked
  Local branch configured for 'git pull':
    external merges with remote master
  Local ref configured for 'git push':
    master pushes to master (local out of date)

That last section is the problem. 'external' should merge with other/master, but master should NEVER push to other/master. It's never gong to work.