Alpine APKBUILD matched license text is incorrect with --package

[pombredanne]

For instance, this APKBUILD:

# Contributor: Oliver Smith <ollieparanoid@postmarketos.org>
# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=linux-firmware
pkgver=20201218
pkgrel=0
pkgdesc="firmware files for linux"
url="https://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git;a=summary"
arch="all"
license="custom:multiple"

will yield a correct extracted_license_statement and an incorrect matched text

{
  "type": "alpine",
  "namespace": null,
  "name": "linux-firmware",
  "version": "20201218-r0",
.......
  "declared_license_expression": "unknown-license-reference",
  "declared_license_expression_spdx": "LicenseRef-scancode-unknown-license-reference",
  "license_detections": [
    {
      "license_expression": "unknown-license-reference",
      "license_expression_spdx": "LicenseRef-scancode-unknown-license-reference",
      "matches": [
        {
          "license_expression": "unknown-license-reference",
          "license_expression_spdx": "LicenseRef-scancode-unknown-license-reference",
          "from_file": null,
          "start_line": 1,
          "end_line": 1,
          "matcher": "1-hash",
          "score": 100.0,
          "matched_length": 5,
          "match_coverage": 100.0,
          "rule_relevance": 100,
          "rule_identifier": "unknown-license-reference_421.RULE",
          "rule_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/rules/unknown-license-reference_421.RULE",
          "matched_text": "licenseref-scancode-unknown-license-reference"
        }
      ],
      "identifier": "unknown_license_reference-9aed0e23-afe9-af3b-c9a4-e4121dca0810"
    }
  ],
  "other_license_expression": null,
  "other_license_expression_spdx": null,
  "other_license_detections": [],
  "extracted_license_statement": "custom:multiple",
.......

The "matched_text": "licenseref-scancode-unknown-license-reference" is incorrect .... this is not what the extracted license statement contains.