repo_read_index(opt->repo);
opt->ancestor = ancestor_name;
- clean = merge_trees(opt, get_commit_tree(h1), get_commit_tree(h2),
- get_commit_tree(merged_common_ancestors),
+ clean = merge_trees(opt,
+ repo_get_commit_tree(opt->repo, h1),
+ repo_get_commit_tree(opt->repo, h2),
+ repo_get_commit_tree(opt->repo,
+ merged_common_ancestors),
&mrtree);
strbuf_release(&merge_base_abbrev);
if (clean < 0) {