I can only guess what happened here: in aa750c0819, this code to manually load
the reflog commits was added, to make sorting branches by recency work when the
reflog is filtered by path. At that time we didn't have separate ReflogCommits
and FilteredReflogCommits models yet. Then, FilteredReflogCommits was introduced
(in 8822c409e2), probably for the very purpose of being able to get rid of this
again; but then it was forgotton to actually get rid of it.
The funny thing is that the introduction of FilteredReflogCommits happened in
the very next commit, 15 minutes later.
d99ceb91ee