Merge branch 'hn/reflog-tests'

Prepare tests on ref API to help testing reftable backends. * hn/reflog-tests: refs/debug: trim trailing LF from reflog message test-ref-store: tweaks to for-each-reflog-ent format t1405: check for_each_reflog_ent_reverse() more thoroughly test-ref-store: don't add newline to reflog message show-branch: show reflog message