arrow

GH-44441: [Release] Add missing `--repo apache/arrow` in `02-source.sh` (#44442)

### Rationale for this change

We need to specify `--repo apache/arrow` to ensure using apache/arrow.

### What changes are included in this PR?

Add `--repo apache/arrow`.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.
* GitHub Issue: #44441

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>