file link to multiple diffs with the same filename always link the the first one

[kintarowins]

I'm creating a report page that shows diffs from multiple branches e.g.

branchA:
file1.txt
file2.txt

branchB:
file1.txt
file2.txt

The problem here is that when I click on the link for file1.txt from branchB, it jumps to the diffs of branchA's file1.txt.
I think someone reported a similar issue before and mentioned that this is due to the simple hash function used for the filename. Is there a way to assign a custom file id instead?

I am using the lastest version available 3.4.24