We've libguestfs-xfs-1.38.2-12.22.lp.el7ev since 2018-11-20.1
@Lon, could you please assign someone other than Nathan to validate this bug?
Package available in repos with puddle 2018-12-14.1 and is installable.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2019:0045