[Release] 02-source.sh fails creating verification PR for Release Candidate #50811

$ SOURCE_DEFAULT=0 SOURCE_PR=1 dev/release/02-source.sh 25.0.1 0
Preparing source for tag apache-arrow-25.0.1-rc0
Using commit 2efbed957cb79a58f2a3af264d5d9956f38ecea6
Traceback (most recent call last):
  File "/home/raulcd/code/archery/bin/archery", line 7, in <module>
    sys.exit(archery())
             ~~~~~~~^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 1462, in __call__
    return self.main(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 1383, in main
    rv = self.invoke(ctx)
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 1850, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 1850, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 1246, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/core.py", line 814, in invoke
    return callback(*args, **kwargs)
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/click/decorators.py", line 46, in new_func
    return f(get_current_context().obj, *args, **kwargs)
  File "/home/raulcd/code/arrow/dev/archery/archery/crossbow/cli.py", line 196, in verify_release_candidate
    response = arrow.github_pr(title=pr_title, head=head_branch,
                               base=base_branch, body=pr_body,
                               github_token=obj['queue'].github_token,
                               create=create_pr)
  File "/home/raulcd/code/arrow/dev/archery/archery/crossbow/core.py", line 566, in github_pr
    return repo.create_pull(title=title, base=base, head=head,
           ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                            body=body or "")
                            ^^^^^^^^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/github/Repository.py", line 1858, in create_pull
    headers, data = self._requester.requestJsonAndCheck("POST", f"{self.url}/pulls", input=post_parameters)
                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/github/Requester.py", line 623, in requestJsonAndCheck
    return self.__check(
           ~~~~~~~~~~~~^
        *self.requestJson(
        ^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
        )
        ^
    )
    ^
  File "/home/raulcd/code/archery/lib/python3.13/site-packages/github/Requester.py", line 853, in __check
    raise self.createException(status, responseHeaders, data)
github.GithubException.GithubException: Validation Failed: 422 {"message": "Validation Failed", "errors": [{"resource": "PullRequest", "field": "base", "code": "invalid"}], "documentation_url": "https://docs.github.com/rest/pulls/pulls#create-a-pull-request", "status": "422"}