no. You need to change the file /etc/opkg/dist.conf and put in your files
with the following content.
src/gz chaos_calmer_base http://www.gl-inet.com/openwrt/ramips/2.20/packages/base
src/gz chaos_calmer_luci http://www.gl-inet.com/openwrt/ramips/2.20/packages/luci
src/gz chaos_calmer_management http://www.gl-inet.com/openwrt/ramips/2.20/packages/management
src/gz chaos_calmer_packages http://www.gl-inet.com/openwrt/ramips/2.20/packages/packages
src/gz chaos_calmer_routing http://www.gl-inet.com/openwrt/ramips/2.20/packages/routing
src/gz chaos_calmer_telephony http://www.gl-inet.com/openwrt/ramips/2.20/packages/telephony
src/gz chaos_calmer_oldpackages http://www.gl-inet.com/openwrt/ramips/2.20/packages/oldpackages
src/gz chaos_calmer_node http://www.gl-inet.com/openwrt/ramips/2.20/packages/node
You still used openwrt repo above.