We have about 20000 git repositories and the number is increasing. Sometimes we want to find out which repositories have contained a keyword on any of its branches/tags. git grep works for one or several repositories, but it takes too much time in iterating over all the repositories.
Now we have OpenGrok. But it works only for fixed revisions. Indexing a revision takes a lot of time.
Are there any solutions or tools? Thanks for any advice.