git I can pull correctly but cannot push

Question

I use git to work with assembla in my Mac. I can pull from remote branch successfully but cannot push to it.

[13:59:36]  $ git pull origin master
From git.assembla.com:something
 * branch            master     -> FETCH_HEAD
Already up-to-date.
[14:00:00]  $ git push origin master
E, [2014-03-17T19:00:14.572139 #4924] ERROR -- : permission denied
fatal: Could not read from remote repository.

Does anybody know what's wrong with it?

Answer 1

You have read permissions to that repository, but can't write to it. Contact the repo's owners.

Meanwhile, you can just work on your own fork, as git is a distributed VCS that lets you do neat things like that.