http://repo.opensciencegrid.org/osg/3.6-upcoming/el9/development/x86_64
http://mirror.hep.wisc.edu/upstream/osg/3.6-upcoming/el9/development/x86_64
http://t2.unl.edu/osg/3.6-upcoming/el9/development/x86_64
http://mirror.grid.uchicago.edu/pub/osg/3.6-upcoming/el9/development/x86_64