I went looking through recent series on patchwork and I think this is a good example of the timestamp condition:
https://patchwork.dpdk.org/api/series/35145/. Looks like the original commits were made on April 18, then the newest version was submitted on May 5 but the series record retains the 4/18 date.
Adam, would you agree the project filter for API requests is pretty low hanging fruit? Seems like a common sense improvement to me.