Update libgit2 to 0.28.0-rc1

ethomson · ethomson · commit f954ec58f920 · 2019-02-05T21:59:35.000Z
diff --git a/libgit2 b/libgit2
@@ -1 +1 @@
-Subproject commit a904fc6d12ffc20aa1a238a78000921494222e89
+Subproject commit 1a107fac0fc88a4d74b64ffc9ae2fd178ba631c0
