Is your feature request related to a problem? Please describe.
Currently the sync action only looks in github.com/{repository}, which does not work with Github Enterprise Servers.
Describe the solution you'd like
When assigning the git_url variable, use a new GIT_URL variable which would be defaulted to github.com but be over writable by users with GIT_URL
Describe alternatives you've considered
None
Additional context
Add any other context or screenshots about the feature request here.