If repository is not accessible on file system, GL outputs full path to repository

Summary

If repository is not accessible on file system, GL outputs full path to repository

Steps to reproduce

if repository is not accessible on FS

1. try git push origin some-branch and you will get

marat@marat-i5:~/Development/GITLAB/gitlab-prometheus$ git push origin alertmanager-slack 
fatal: '<SOME PATH>/gitlab-cookbooks/gitlab-prometheus.git' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

2. same output from UI

Expected behavior

Path to repo shouldn't be shown

Actual behavior

Path to repo shown

/cc @briann @pcarranza