/usr/share/mysql/docs/INFO_SRC is in percona-xtradb-cluster-server-5.7 5.7.20-29.24-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | commit: 4a4da7ee5d9ddfd889a42a2f5b16d261e4cc6498
date: 2018-01-24 16:07:51 +0200
build-date: 2018-01-24 10:02:18 -0500
short: 4a4da7e
branch: pxc-rel-5.7.20
MySQL source 5.7.20
|