From the Tk chat:

dgp	I think something is wrong with fossil annotations.

dgp	Looking at
dgp	it's a small patch to tclListObj.c.  Introduces only five new lines.

dgp	Then open
dgp	to see what tclListObj.c created by that checkin looks like.
dgp	Then click the &#91;annotate&#93; link to reach
dgp	I would expect to see only those five new lines marked with 4683efaee9 but I see many more than that.

dgp	starting with lines 21 & 22 or so which are nowhere near the patch.

dgp	Conversely, those five new lines are marked with something else
dgp	403736bc07 - which is the same patch, but the checkin applying it to core-8-5-branch.
dgp	I'd have expected annotations to trace back the primary parent links, not the merges.