Hi,
lore.kernel.org has been archiving qemu-devel for some time. You can use b4 (
https://pypi.org/project/b4/) to easily apply patch series. Now there is a new tool called lei that could be of interest to the QEMU community.
lei let's you query the mailing list for patch series that match queries like specific filenames or functions touched by a patch. It keeps track of patch series that you've already downloaded so you can see just the new stuff.
Instead of adding "R:" entries to the MAINTAINERS file in qemu.git you can now do that locally using lei.
I haven't tried it yet but it seems like a useful tool!
https://people.kernel.org/monsieuricon/lore-lei-part-1-getting-started
Stefan