>>> pprint.pprint(s.revision_get([b'Y\xd7\xa5=\xe5\x980\x8eN\x1f\xffy\x19Z\xe8Z{#\xea\x0e']))
[{'author': {'email': b'me@nanx.me',
             'fullname': b'Nan Xiao <me@nanx.me>',
             'name': b'Nan Xiao'},
  'committer': {'email': b'me@nanx.me',
                'fullname': b'Nan Xiao <me@nanx.me>',
                'name': b'Nan Xiao'},
  'committer_date': None,
  'date': None,
  'directory': b'\x1cAGO\xcbh\xc8ez\x8d\xb1\xc6\xb8\xb6\x9f\xcf|\x8fo\xd8',
  'id': b'Y\xd7\xa5=\xe5\x980\x8eN\x1f\xffy\x19Z\xe8Z{#\xea\x0e',
  'message': b'1.9',
  'metadata': {'extrinsic': {'provider': 'https://cran.r-project.org/src/contrib/grex_1.9.tar.gz',
                             'raw': {'url': 'https://cran.r-project.org/src/contrib/grex_1.9.tar.gz',
                                     'version': '1.9'},
                             'when': '2020-01-09T13:06:20.708259+00:00'},
               'intrinsic': {'raw': {'Author': 'Nan Xiao [aut, cre] '
                                               '(<https://orcid.org/0000-0002-0250-5673>),\n'
                                               '  Gao Wang [aut],\n'
                                               '  Lei Sun [aut]',
                                     'Authors@R': 'c(\n'
                                                  '    person("Nan", "Xiao", '
                                                  'email = "me@nanx.me", role '
                                                  '= c("aut", "cre"),\n'
                                                  '           comment = '
                                                  'c(ORCID = '
                                                  '"0000-0002-0250-5673")),\n'
                                                  '    person("Gao", "Wang", '
                                                  'email = '
                                                  '"gaow@uchicago.edu", role = '
                                                  '"aut"),\n'
                                                  '    person("Lei", "Sun", '
                                                  'email = '
                                                  '"sunl@uchicago.edu", role = '
                                                  '"aut")\n'
                                                  '    )',
                                     'BugReports': 'https://github.com/nanxstats/grex/issues',
                                     'Date/Publication': '2019-05-17 22:40:04 '
                                                         'UTC',
                                     'Depends': 'R (>= 3.5.0)',
                                     'Description': "Convert 'Ensembl' gene "
                                                    'identifiers from '
                                                    'Genotype-Tissue\n'
                                                    '    Expression (GTEx) '
                                                    'data to identifiers in '
                                                    'other annotation '
                                                    'systems,\n'
                                                    "    including 'Entrez', "
                                                    "'HGNC', and 'UniProt'.",
                                     'Encoding': 'UTF-8',
                                     'LazyData': 'TRUE',
                                     'License': 'GPL-3 | file LICENSE',
                                     'Maintainer': 'Nan Xiao <me@nanx.me>',
                                     'NeedsCompilation': 'no',
                                     'Package': 'grex',
                                     'Packaged': '2019-05-17 22:22:43 UTC; '
                                                 'nanx',
                                     'Repository': 'CRAN',
                                     'RoxygenNote': '6.1.1',
                                     'Suggests': 'knitr, rmarkdown',
                                     'Title': 'Gene ID Mapping for '
                                              'Genotype-Tissue Expression '
                                              '(GTEx) Data',
                                     'Type': 'Package',
                                     'URL': 'https://nanx.me/grex/, '
                                            'https://github.com/nanxstats/grex',
                                     'Version': '1.9',
                                     'VignetteBuilder': 'knitr'},
                             'tool': 'DESCRIPTION'},
               'original_artifact': [{'checksums': {'sha1': 'b798d512ad5e0a58b39b5d11e0c3dbe19aff3e1a',
                                                    'sha256': 'ebc2ca93af6a9115a34f9b7885fa4d5cf49f1bbe67fdfda01fb0e66c8e55d668'},
                                      'filename': 'grex_1.9.tar.gz',
                                      'length': 1135597}]},
  'parents': [],
  'synthetic': True,
  'type': 'tar'}]