git-am: head -1 is obsolete and doesn't work on some new systems

diff --git a/walker.c b/walker.c
index c10eca88261eed6b0e5c3fc2fdc19b8332c4ac6b..0e68ee6d2e2fb1b866ecec00c5f6446af366a62e 100644 (file)
--- a/walker.c
+++ b/walker.c
@@ -59,6 +59,7 @@ static int process_tree(struct walker *walker, struct tree *tree)
        free(tree->buffer);
        tree->buffer = NULL;
        tree->size = 0;
+       tree->object.parsed = 0;
        return 0;
 }
 
@@ -190,9 +191,13 @@ static int interpret_target(struct walker *walker, char *target, unsigned char *
        if (!get_sha1_hex(target, sha1))
                return 0;
        if (!check_ref_format(target)) {
-               if (!walker->fetch_ref(walker, target, sha1)) {
+               struct ref *ref = alloc_ref_from_str(target);
+               if (!walker->fetch_ref(walker, ref)) {
+                       hashcpy(sha1, ref->old_sha1);
+                       free(ref);
                        return 0;
                }
+               free(ref);
        }
        return -1;
 }