Branchline brings GitLens' Commit Graph and Visual File History to private repos, the two views GitLens paywalls behind Pro the moment a repo isn't public.
What you get: a visual commit graph with branch and tag labels and a live row for uncommitted changes, a per-file history view with diffs that follows renames, and the ability to open any file exactly as it looked at any past commit.
14-day free trial, then a one-time $15 license. No subscription