checkout: fix regression in checkout -b on intitial checkout

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 21bac3a561dfa253d54f35f052c83e132396b598..99b873d3cd4075d59cd4133ca1de021812bc2990 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -566,6 +566,14 @@ static int skip_merge_working_tree(const struct checkout_opts *opts,
         * Remaining variables are not checkout options but used to track state
         */
 
+        /*
+         * Do the merge if this is the initial checkout. We cannot use
+         * is_cache_unborn() here because the index hasn't been loaded yet
+         * so cache_nr and timestamp.sec are always zero.
+         */
+       if (!file_exists(get_index_file()))
+               return 0;
+
        return 1;
 }