Addendum:

#1. Component leads should check the blocker bug for each project, to review non-pom-file changes applicable to their repos (usually build.properties, manifests, or tests). Apply them if they can be consumed, or ask questions about them on the bugs. PDE doesn't require any non-pom-file changes.

#2. If cherry-picking the change, you can add the remote and fetch the appropriate branch. This uses the eclipse.platform.ui repo as an example, and I get the branch name for the fetch from the URL to the commit:

git remote add cbi git://git.eclipse.org/gitroot/cbi/eclipse.platform.ui.git # for platform ui
# you can do a git fetch cbi, but that will create all of the remote branches under cbi/
# this only gets the one we're interested in
git fetch cbi refs/heads/R3_cbipoms:refs/remotes/cbi/R3_cbipoms
git log cbi/R3_cbipoms