commit-graph: not compatible with uninitialized repo

diff --git a/commit-graph.c b/commit-graph.c
index c4eaedf4e5448075d2db678ea9e13e58bdb514e9..cee2caab5c60de5dc778840d931ae6eda8782fcc 100644 (file)
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -62,6 +62,9 @@ extern int read_replace_refs;
 
 static int commit_graph_compatible(struct repository *r)
 {
+       if (!r->gitdir)
+               return 0;
+
        if (read_replace_refs) {
                prepare_replace_object(r);
                if (hashmap_get_size(&r->objects->replace_map->map))