We need to init all.git for the v2 repo test to ensure
`git --git-dir=v2/all.git rev-parse --git-path objects/info/alternates`
doesn't warn or fail and clutter stderr. This is noticeable
when setting TAIL="tail -F" in env before running this test.
my @clone = qw(git clone -q -s --bare);
is(system(@clone, $bare->{git_dir}, $alt), 0, 'clone shared repo');
+ system(qw(git init --bare -q), "$v2/all.git") == 0 or die;
for my $i (0..2) {
is(system(@clone, $alt, "$v2/git/$i.git"), 0, "clone epoch $i");
}