Thanks for your reply, and it's ok, got it.
I have made a local copy of the footprint libraries as mentioned by bobc and it was success, but a surprise thing was there is additionally new 9 libraries got added to the local copy. but it did't appear/sync in the global library table.
why the new additions to the git library is not reflecting in my installation?
does the eeschema libraries also working in this way? do we need to manually update?
and the documents link you'r given was the updated one right? many thanks.