How to integrate GitLab with Existing Shopify Theme

I’m trying to find a similar solution to integrate Shopify to Gitlab as with Github but running into a lot of road blocks. I saw from one of your articles how you can update config settings so you can deploy to Shopify staging and dev themes.

But, is there anyway for it to flow the other way? Meaning, can you make changes in Shopify that are reflected in your gitlab Shopify repo?

Any help would be greatly appreciate. Otherwise may just have to opt to using Github even though the rest of our repos are managed it Gitlab :confused: