何用和更复制$ rpm-ostree upgrade --check ...  AvailableUpdate:          Version: 34.20210905.0 (2021-09-05T20:59:47Z)           Commit: d8bab818f5abcfb58d2c038614965bf26426d55667e52018fcd295b9bfbc88b4     GPGSignature: Valid signature by 8C5BA6990BDB26E19F2A1A801161AE6945719A39    SecAdvisories: 1 moderate             Diff: 4 upgraded  1.2.3.4.5.6.7.8.