Cannot delete remote branch in git

I'd like to delete a remote branch from my ce开发者_StackOverflow中文版ntral git repository. The usual advice is to do 'git push origin :branchname' or 'git push origin :heads/branchname'. But when I try that, I get this error message:

*** Deleting a branch is not allowed in this repository

error: hooks/update exited with error code 1

error: hook declined to update refs/heads/branchname

To /opt/repo/myrepo.git

! [remote rejected] branchname (hook declined)

error: failed to push some refs to '/opt/repo/myrepo.git'

What gives? I'm using git version 1.5.4.3, if that helps.

Someone has enabled a hook in the remote repo that is prohibiting the delete -- this is usually done so that someone can't push a rebased branch into the repo. (I maintain a fairly large collection of git repositories and they are all configured this way, although not with a hook.)

Look in the hooks/ directory in the remote repository. There will be a script named "update"; this is what's refusing to let you delete the branch.

I think this might be what the message says: the remote repository does not permit any removal of history. Consider different git hosting (if you cannot adjust the settings on what you are currently using) if you really need this functionality.

You might have to log into your remote repository and delete the branch manually (ie - from the file system).