Mirrors with GitLab restore to new instance?

We’re running a GitLab CE 12.10.6 instance as a Docker swarm stack in our PROD UCP.
I took a backup of it, and would like to restore the data to another instance in our LAB UCP to create a LAB environment to test bug fixes, etc.
In PROD, we have several deploy repos that are push mirrored to other admin-only repos.
I am wondering if when I restore the backup image into LAB, if the mirrors there will still point to PROD.
Or are the mirrors repointed to be within LAB?

Any help you could provide would be greatly appreciated.
Thanks in advance.