Re: [PATCH] clone --branch: refuse to clone if upstream repo is empty

> Since 920b691 (clone: refuse to clone if --branch
> points to bogus ref) we refuse to clone with option
> "-b" if the specified branch does not exist in the
> (non-empty) upstream. If the upstream repository is empty,
> the branch doesn't exist, either. So refuse the clone too.

> Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
> ---
>  builtin/clone.c         | 4 ++++
>  t/t5706-clone-branch.sh | 8 +++++++-
>  2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/builtin/clone.c b/builtin/clone.c
> index ca3eb68..5af386e 100644
> --- a/builtin/clone.c
> +++ b/builtin/clone.c
> @@ -945,6 +945,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
>                         our_head_points_at = remote_head_points_at;
>         }
>         else {
> +               if (option_branch)
> +                       die(_("Remote branch %s not found in upstream %s"),
> +                                       option_branch, option_origin);
> +
>                 warning(_("You appear to have cloned an empty repository."));
>                 mapped_refs = NULL;
>                 our_head_points_at = NULL;
> diff --git a/t/t5706-clone-branch.sh b/t/t5706-clone-branch.sh
> index 56be67e..6e7a7be 100755
> --- a/t/t5706-clone-branch.sh
> +++ b/t/t5706-clone-branch.sh
> @@ -20,7 +20,9 @@ test_expect_success 'setup' '
>          echo one >file && git add file && git commit -m one &&
>          git checkout -b two &&
>          echo two >file && git add file && git commit -m two &&
> -        git checkout master)
> +        git checkout master) &&
> +       mkdir empty &&
> +       (cd empty && git init)
>  '
>
>  test_expect_success 'vanilla clone chooses HEAD' '
> @@ -61,4 +63,8 @@ test_expect_success 'clone -b with bogus branch' '
>         test_must_fail git clone -b bogus parent clone-bogus
>  '
>
> +test_expect_success 'clone -b not allowed with empty repos' '
> +       test_must_fail git clone -b branch empty clone-branch-empty
> +'
> +
>  test_done
> --
> 1.8.4.652.g0d6e0ce
>