Git Error on Commit

I'm having a problem using git to commit a change.

When I run it through IntelliJ I get the error message.  There is no other information.

Error executing git commit --only -F /tmp/git-commit-msg-222753429846841566.txt -- my/dir/UserFactory.java

If I run it through the command line, it works as I expect it.

I'm using a post-commit hook to update my copyright notices and this seems to be the root cause of the problem.

Is there a way to turn up the error reporting when running git?  Is it possible that my hook is returning a non-zero value which IntelliJ is reporting as a failure?