broken Leap 42.3 network distribution repository - missing public GPG key

Hi,
there are broken links on the root of the network distribution repository for openSUSE Leap 42.3, most important at all is missing GPG public keys.
e.g. on

http://download.opensuse.org/distribution/leap/42.3/repo/oss/gpg-pubkey-307e3d54-4be01a65.asc

(same at non-oss) and other links gpg* and GPL* which are now broken causing error 404 (file not found) during install or upgrade openSUSE Lep 42.3 from the network. Could someone fix this issue? Thx.