Can postman test collection get changes pulled in to and from an integrated Git repository

My question: I am trying to make my postman collections able to collaborate through GitLab. In postman, there is an option to back up (synchronize) the collection into GitLab.

I have integrated my postman test collection with a GitLab repository. And now I can see the changes I do on Postman are reaching GitLab as soon as the save button is hit. And it overwrites whatever is on GitLab. Also, there is not sync (pull changes from GitLab) into the postman.

Is there a way that I can sync the code between postman and GitLab? NOTE: This is just a postman test collection and there is NO specification file, in my project.