Man pages matching name wsrep_sst_mysqldump in section 1:

wsrep_sst_mysqldump.1.en	debian 10 / mariadb-server-10.3
wsrep_sst_mysqldump.1.en	debian 11 / mariadb-server-10.5
wsrep_sst_mysqldump.1.en	debian 12 / mariadb-server