add support ota

hc

2023-02-18 a08c8b75ee83d7f62c9aefc23bfb42082aa4076c

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# From http://snapshot.debian.org/archive/debian/20141023T043132Z/pool/main/h/heirloom-mailx/heirloom-mailx_12.5-3.dsc
sha256    015ba4209135867f37a0245d22235a392b8bbed956913286b887c2e2a9a421ad    heirloom-mailx_12.5.orig.tar.gz