Function bisect_reset

builtin/bisect.c:237–271

}

static int bisect_reset(const char *commit)
{
	struct strbuf branch = STRBUF_INIT;

	if (!commit) {
		if (!strbuf_read_file(&branch, git_path_bisect_start(), 0))
			printf(_("We are not bisecting.\n"));
		else
			strbuf_rtrim(&branch);
	} else {
		struct object_id oid;

		if (repo_get_oid_commit(the_repository, commit, &oid))
			return error(_("'%s' is not a valid commit"), commit);
		strbuf_addstr(&branch, commit);
	}

	if (branch.len && !refs_ref_exists(get_main_ref_store(the_repository), "BISECT_HEAD")) {
		struct child_process cmd = CHILD_PROCESS_INIT;

		cmd.git_cmd = 1;
		strvec_pushl(&cmd.args, "checkout", "--ignore-other-worktrees",
				branch.buf, "--", NULL);
		if (run_command(&cmd)) {
			error(_("could not check out original"
				" HEAD '%s'. Try 'git bisect"
				" reset <commit>'."), branch.buf);
			strbuf_release(&branch);
			return -1;
		}
	}

	strbuf_release(&branch);
	return bisect_clean_state();
}

static void log_commit(FILE *fp,
		       const char *fmt, const char *state,