Rebecca Turner authored Nov 21, 2024 and Rebecca Turner committed Dec 02, 2024

This prevents the tests from spamming lots of output, making it easier
to watch them as they run.

Before:

```
      check VCS test framework:                                                 10% warning: refname 'd6077f476a7c17fe8528e62688a19cc5bddbfbdc' is ambiguous.
Git normally never creates a ref that ends with 40 hex characters
because it will be ignored when you just specify 40-hex. These refs
may be created by mistake. For example,

  git switch -c $br $(git rev-parse ...)

where "$br" is somehow empty and a 40-hex ref is created. Please
examine these refs and maybe delete them. Turn this message off by
running "git config advice.objectNameWarning false"
rm 'file/C'
Cloning into '/private/var/folders/z5/fclwwdms3r1gq4k4p3pkvvc00000gn/T/vcstest-64269/src/file/C'...
done.
Submodule path 'file/C': checked out '210af0166ade8b306b425782305b8c6e910aa2c0'
Cloning into '/private/var/folders/z5/fclwwdms3r1gq4k4p3pkvvc00000gn/T/vcstest-64267/src/file/D'...
done.
Submodule path 'file/D': checked out '95b580ef06aec22b38f6e0a5c3305d5c293669a0'
branch 'branch_D' set up to track 'main'.
branch 'branch_C' set up to track 'main'.
rm 'file/C'
Cloning into '/private/var/folders/z5/fclwwdms3r1gq4k4p3pkvvc00000gn/T/vcstest-64269/src/file/C'...
done.
rm 'file/D'
Submodule path 'file/C': checked out 'ee47ffdda57945d841bc7f59ea72a78043c4ac02'
Cloning into '/private/var/folders/z5/fclwwdms3r1gq4k4p3pkvvc00000gn/T/vcstest-64267/src/file/D'...
done.
Submodule path 'file/D': checked out '23d9b5f39ae56c429dd9498d42338d27ea4e6545'
```

After:

```
  UnitTests.Distribution.Client.VCS
    git
      check VCS test framework:                                                 warning: --depth is ignored in local clones; use file:// instead.
warning: refname 'fbfe708a98c79a7c97e83609275b0f604f26e18b' is ambiguous.
Git normally never creates a ref that ends with 40 hex characters
because it will be ignored when you just specify 40-hex. These refs
may be created by mistake. For example,

  git switch -c $br $(git rev-parse ...)

where "$br" is somehow empty and a 40-hex ref is created. Please
examine these refs and maybe delete them. Turn this message off by
running "git config advice.objectNameWarning false"
warning: --depth is ignored in local clones; use file:// instead.
warning: --depth is ignored in local clones; use file:// instead.
warning: refname 'dc2abca0fd032b5cdd8904e6931679b4d6e6b25b' is ambiguous.
Git normally never creates a ref that ends with 40 hex characters
because it will be ignored when you just specify 40-hex. These refs
may be created by mistake. For example,

  git switch -c $br $(git rev-parse ...)

where "$br" is somehow empty and a 40-hex ref is created. Please
examine these refs and maybe delete them. Turn this message off by
running "git config advice.objectNameWarning false"
```

These warnings require semantic changes which will come in a separate
PR.