Andy Koppe [off-list ref] writes:
Since 993d57eded (refs: pseudorefs are no refs, 2024-05-15), the term
"pseudoref" has been restricted to FETCH_HEAD and MERGE_HEAD, which are
not stored in the ref backends, while other refs outside of "refs/",
such as HEAD and ORIG_HEAD, are called root refs. However, a fair number
of docs, comments, messages and tests still use "pseudoref" in its old
sense. And while the glossary describes the rules for refs in the root
of the hierarchy, it does not explicitly define the term, even though
"git for-each-ref --include-root-refs" uses it.
Thanks. Overall this was a pleasant read.