describe: when failing, tell the user about options that work

diff --git a/cache-tree.c b/cache-tree.c
index 16a65dfac11eccc68acb4a0ed472761f3f84f9c4..d91743775dfbe98d99d8ab25a270af320c8b984e 100644 (file)
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -329,7 +329,8 @@ static int update_one(struct cache_tree *it,
                        entlen = pathlen - baselen;
                }
                if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1))
-                       return error("invalid object %s", sha1_to_hex(sha1));
+                       return error("invalid object %06o %s for '%.*s'",
+                               mode, sha1_to_hex(sha1), entlen+baselen, path);
 
                if (ce->ce_flags & CE_REMOVE)
                        continue; /* entry being removed */