Fetch tags of submodules
Fetch tags of submodules

Some projects rely on tag to determine the published version number, so
this is needed for the community build to work properly.

lampepfl/dotty,lampepfl/dotty,lampepfl/dotty,lampepfl/dotty,dotty-staging/dotty,dotty-staging/dotty,sjrd/dotty,dotty-staging/dotty,lampepfl/dotty,sjrd/dotty,sjrd/dotty,dotty-staging/dotty,sjrd/dotty,dotty-staging/dotty,sjrd/dotty