How do I set the committer with cherry-pick? (or is there a better way to get changes from someone?)

I'm helping to maintain a project, so people send me requests to pull from their repos. So I create a branch and then pull their stuff in, taking a look at the various different commits. I write the commit numbers that I want to cherry pick to a file (also is there a better way of handling this? it's a bit tedious. it'd be nice to mark certain commits for cherry picking and then suck them all in later). Then when I've gone through all the new commits and chosen the ones I want, I check out the master branch and cherry-pick those commits in.

At this point the commits are in the repo, but they only have author information. I'd like to specify that I'm the one who committed this change now. How can I do that?

And finally, is this a good way to incorporate changes from other devs? Is there a better way?

Pat