[fetchmail]Patch request

Hello,

I would like that daemonized fetchmail run a prog before reading it's config
file (if it does so) and before it's fetching mails.

I don't know anything in C so I request from somebody a patch for doing
this. May be a new option like -r /bin/myprog .

I began to write a software (with perl) that generate the config file from a
MySQL DB and I would like this tool run before fetchmail start fetching.

Thanks for help.