Here&#x27;s the first &quot;synthetic commit&quot; from June 20, 1972<p><a href="https:&#x2F;&#x2F;github.com&#x2F;dspinellis&#x2F;unix-history-repo&#x2F;commit&#x2F;6717481c358b484385b4f5d5b95205e2a924a2c7" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;dspinellis&#x2F;unix-history-repo&#x2F;commit&#x2F;67174...</a>