I see that there is a successful build of Samba 14.2 for openSUSE 15.3 but failed for Tumbleweed in OBS here:

https://build.opensuse.org/project/show/spins:invis:15:testing:samba412

how can I  get this version in zypper to try? Samba 14.3 is broken for deleting files from a client.

Samba.org recommends this version over 14.3.