Update vendored libgit2
diff --git a/vendor/libgit2 b/vendor/libgit2
index fb84cde..ed38e26 160000
--- a/vendor/libgit2
+++ b/vendor/libgit2
@@ -1 +1 @@
-Subproject commit fb84cde81e11947add4ff8bb9b4084f7d76e6567
+Subproject commit ed38e26db5435b519d8b796e4b6c2c660fe982b5