[RFH] how to know if a cherry-picked patch has been applied already?

 Hello everyone,

 I'm managing a git repository where I include my and my co-workers'
 work. With some co-workers I can use 'git merge' but with some I use
 'git cherry-pick'. However, cherry-picking leads to problems because a
 new commit ID is generated and I must remember which patches I have
 cherry-picked to my tree. Is there any easy way to tell which patches
 have and have not been applied?

    Thanks,
            Michal