We are using the Opatch version 6880880, you download it from support.oracle.com
Upgrade the OPatch: 12.2.0.1.17 => 12.2.0.1.23
Step 1: Check the current version of the Grid Infrastructure patch version.
$ ./opatch version
OPatch Version: 12.2.0.1.17
OPatch succeeded.
Step 2: Backup the OPatch Directory
$ mv OPatch OPatch_BKP
Step 3: Unzip the new Oracle Optach
$ unzip /home/grid/p6880880_190000_Linux-x86-64.zip -d /u01/app/19c/grid/
Step 4: Check the new version of the Grid Infrastructure patch version.
$ ./opatch version
OPatch Version: 12.2.0.1.23
OPatch succeeded.