Fetching simultaneously from several git repositories

Question

I've got a couple of git repositories, each of them has several remotes named public_<user>.

I'd like to fetch simultaneously from every remote for all repositories.

I'd already discovered (myrepos) but this script only seams to work for origin remotes.

Answer 1

The git remote update command will perform a fetch operation on all remotes for a given repository:

$ git remote
larsks
origin
$ git remote update
Fetching origin
remote: Reusing existing pack: 1, done.
remote: Total 1 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (1/1), done.
From https://github.com/teythoon/afew
   7317eb0..50db012  master     -> origin/master
Fetching larsks
From github.com:larsks/afew

If you wanted to automatically run this across a collection of git repositories, you could do something like this:

$ find * -maxdepth 1 -name .git -execdir git remote update \;

This finds everything containing a .git directory and then runs git remote update in the parent of the .git directory.

To find all bare repositories, you could do something like:

$ find * -maxdepth 1 -name index -execdir git remote update \;

That is, look for the index file instead of the .git directory.

If you wanted to target all submodules, you can use the git submodule foreach command:

$ find * -maxdepth 1 -name .git -execdir \
  git submodule foreach git remote update \;

If you wanted to combine this all into a single command:

$ find * -maxdepth 1 -name .git -execdir \
  sh -c 'git remote update; git submodule foreach git remote update' \;

Answer 2

I believe you're looking for the --all flag:

git fetch --all

Based on a quick glance at the script you linked, it seems like that script will accept this flag and pass it on to git for each of your repositories.

Answer 3

git forward fetches, prunes, and fast-forwards any number of tracking branches over any number of remotes at once. It's great for an integrator who's following many remotes/branches at once.