The command used was:
svn merge -r4702:4701 .
Not all files had been properly updated due to the following error:
svnmerge: command execution failed (exit code: 1)
svn log --incremental -r4679 svn+ssh://bugman@.../svn/relax/1.3
ssh_exchange_identification: Connection closed by remote host
svn: Connection closed unexpectedly