strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
return 1;
case 'T': /* tree hash */
- strbuf_addstr(sb, oid_to_hex(&commit->tree->object.oid));
+ strbuf_addstr(sb, oid_to_hex(get_commit_tree_oid(commit)));
return 1;
case 't': /* abbreviated tree hash */
- strbuf_add_unique_abbrev(sb, &commit->tree->object.oid,
+ strbuf_add_unique_abbrev(sb,
+ get_commit_tree_oid(commit),
c->pretty_ctx->abbrev);
return 1;
case 'P': /* parent hashes */