ERR: ChangeLog, DATESTAMP, BASE-VER and DEV-PHASE updates

[Martin Sebor]

Could someone explain what the following error means and how
to avoid it?  It's for a commit to the 10 branch with the usual
commit message format and changes to only .c/.C files (same as
in r11-1899).  There's nothing more about the subject of the ERR
at the link it points to than what it says.

remote: *** ChangeLog format failed:
remote: ERR: ChangeLog, DATESTAMP, BASE-VER and DEV-PHASE updates should 
be done separately from normal commits
remote:
remote: Please see: https://gcc.gnu.org/codingconventions.html#ChangeLogs
remote:
remote: error: hook declined to update refs/heads/releases/gcc-10
To git+ssh://gcc.gnu.org/git/gcc.git

Thanks
Martin