Error :

Host key verification failed.
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: unexplained error (code 255) at io.c(226) 

Job for reference - 

https://master-jenkins-csb-quarkus-prod.apps.ocp-c1.prod.psi.redhat.com/job/Quarkus-Platform-Maven-Repo-Generation/