What is the difference between artifacts in uefi-staging and uefi-openplatformpkg



I’ve noticed that there are two kinds of UEFI snapshots being published for HiKey, one is here http://snapshots.linaro.org/96boards/hikey/linaro/uefi-openplatformpkg/ and the other one is over here http://snapshots.linaro.org/96boards/reference-platform/components/uefi-staging/

Can someone please let me know what’s the difference between them and when should I use one URL vs. the other?