`mar -x <mar-file>` I pulled `mar` from https://archive.mozilla.org/pub/firefox/candidates/114.0b9-candidates/build1/mar-tools
Bug 1835022 Comment 20 Edit History
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`mar -x <mar-file>` `xz -d -c <extracted-file>` I pulled `mar` from https://archive.mozilla.org/pub/firefox/candidates/114.0b9-candidates/build1/mar-tools