reflog-walk: always make HEAD@{0} show indexed selectors

diff --git a/RelNotes b/RelNotes
index e4bd68a0db00ed18db8199e92e8669919de53706..81eb3c2271e534c04ec65227b45da12ab6eccf77 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.6.4.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.7.7.txt
\ No newline at end of file