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-rw-r--r--builtin/log.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/builtin/log.c b/builtin/log.c
index a1fbc60..f4d30d2 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1064,8 +1064,8 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
diff_setup_done(&opts);
- diff_tree_oid(&origin->maybe_tree->object.oid,
- &head->maybe_tree->object.oid,
+ diff_tree_oid(get_commit_tree_oid(origin),
+ get_commit_tree_oid(head),
"", &opts);
diffcore_std(&opts);
diff_flush(&opts);