The git hook pre_push doesn't seem to work.

Steps to reproduce (simple test):

Create a simple file "pre_push" in ".git/hooks" like this:

#!/bin/sh
echo hello > pre_push.log.txt

Make sure it's encoding is utf-8 and the line endings are linux style.

Confirm that it's working by opening the git bash and run ".git/hooks/pre_push". The file "pre_push.log.txt" should be created. Remove it for the real test.

Now push something to another repo using SourceTree. The file will not be created