Andrew's git / gitweb.git / Documentation/config/remotes.txt
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Documentation / config / remotes.txton commit diff-delta: set size out-parameter to 0 for NULL delta (e4b3690)
   1remotes.<group>::
   2        The list of remotes which are fetched by "git remote update
   3        <group>".  See linkgit:git-remote[1].