Cope with the fact that the updated git can pack refs differently

1 files changed, 9 insertions, 1 deletions

diff --git a/lib/gall/repository.lua b/lib/gall/repository.lua
index 0e2c2d5..65e4a42 100644
--- a/lib/gall/repository.lua
+++ b/lib/gall/repository.lua
@@ -83,9 +83,17 @@ function repomethod:get_ref(ref)
 end
 
 if ll.git2 then
+   local orig_get_ref = repomethod.get_ref
    function repomethod:get_ref(ref)
-      local rref = ll.git2.Reference.lookup(self.git2.repo, ref)
+      local rref, msg = ll.git2.Reference.lookup(self.git2.repo, ref)
       if not rref then
+	 -- Our libgit2 code sometimes cannot cope with packed-refs
+	 -- which contain peeled refs not in refs/tags/ so we try
+	 -- again with the underlying git install if we get this
+	 -- message
+	 if msg == "The packed references file is corrupted" then
+	    return orig_ret_ref(self, ref)
+	 end
 	 return nil
       end
       if rref:type() ~= ll.git2.REF_OID then