FUSE: http://fuse.sourceforge.net
CopyFS: http://n0x.org/copyfs/
Code:
%define origname copyfs
%define name fuse-copyfs
%define ver 1.0.1
%define rel 1
%define debug_packages %{nil}
%define debug_package %{nil}
Name: %{name}
Summary: %{name}, a copy-on-write, versioned filesystem using FUSE
Version: %{ver}
Release: %{rel}
License: GPL
Group: Utilities/System
Source0: %{origname}-%{ver}.tar.bz2
...