Mirroring from GitLab to GitLab wiki repo

I have a bunch of Markdown files in my repo that I want to use for my documentation. Essentially, I want to mirror files from my repo.git to repo.wiki.git. I currently can do that by creating a personal access token with full access and setting the url: https://USERNAME:TOKEN@gitlab.com/USERNAME/REPO.wiki.git. The problem, however, is that this exposes a token to my personal account, and any collaborator on the repo will get far too much access. Is there a way to create a more restricted token? After all, I’m just mirroring within the same repo essentially.