Use repo param in gitserver.CommitsUniqueToBranch
Created by: mrnugget
This fixes a regression that was, I think, introduced in 1ad4ea26c183a516f24a50990078854aa1a894b0.
It shows up as errors like these:
[enterprise-worker] ERROR codeintel.gitserver.CommitsUniqueToBranch, error: repository does not exist: , count: 1, elapsed: 0.009333636, repositoryID: 7, branchName: tj/update-repo-integration, isDefaultBranch: false
[enterprise-worker] ERROR Failed to expire old codeintel records, error: gitserver.CommitsUniqueToBranch: repository does not exist:
Note "repository does not exist:" and no repository name.