das-g<p>If I understand your question correctly, <span class="h-card" translate="no"><a href="https://social.jvns.ca/@b0rk" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>b0rk</span></a></span>, you'd like to know where the term HEAD for the currently-checked-out revision in a <a href="https://chaos.social/tags/versionControlSystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>versionControlSystem</span></a> *originally* came from.</p><p>If (be it for its own sake, or as an intermediate (first) step towards answering that above question) you're *also* interested in where <a href="https://chaos.social/tags/Git" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Git</span></a> got it from or what the rational for that naming in Git was, maybe we can just ask <span class="h-card" translate="no"><a href="https://social.kernel.org/users/torvalds" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>torvalds</span></a></span> whether he remembers?</p>