Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Bukkit Changes:
c2d72c82 SPIGOT-3102: Add EXPLOSION SpawnReason
CraftBukkit Changes:
fca41573 SPIGOT-5136: EntityPortalEvent getting called on interdimensional entity teleports
604c8bf0 SPIGOT-3102: Add EXPLOSION SpawnReason
375969a6 Re-add chunk GC for plugin chunk loads
58151368 SPIGOT-5123: Snapshot tile entities can end up with a non-null world
491c8482 SPIGOT-5130: PersistentDataContainer not removing values on TileEntities
Spigot Changes:
d05d3c1f Rebuild patches
This makes it easier for downstream projects (forks) to replace the
version fetching system with their own. It is as simple as implementing
an interface and overriding the default implementation of
org.bukkit.UnsafeValues#getVersionFetcher()
It also makes it easier for us to organize things like the version
history feature.
Lastly I have updated the paper implementation to check against the site
API rather than against jenkins.