There is an info.txt file in the repos with the available extension names, like:
915resolution.tce
aalib.tcel
abiword-plugins.tce
abiword.tce
ace-of-penguins.tcel
acl-devs.tce
acl.tcel
...
...
...
Extending the lines with the md5 and date/time of the last change would help a lot to write community tools to check changes on a fast way without downloading individual md5.txt files.