svn commit logs

[Perry Hutchison]

How would I go about either viewing online, or downloading to view
offline, the svn commit logs for base for the last month -- without
needing to "svn co" all of base/head?  (I don't run current.)

Poudriere is complaining that one of my ports no longer builds on
HEAD, and I'm wondering if there may have been an incompatible
change in a .h file.  I haven't found anything obviously related
in base/head/UPDATING, nor in the archives of current at .