Currently, for pipeline builds, every time the pipeline runs on a new node and merges the branch you're building with master, you get an extra "Git Build Data" entry in the sidebar, even though you're building exactly the same thing.

The individual screens show different revisions being built:

But actually, these are the same PR branch, merged with the same master branch. In this situation, I would expect a single entry, and I would expect the linked page to list the branches which were merged, not to show the commit hash of the merge result. The merge result is literally impossible to access after the build has completed anyway, so there is no point having this information at all.