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copied!<p>If you aren't totally sure what you mean by "uncommit" and don't know if you want to use <code>git reset</code>, please see "<a href="https://stackoverflow.com/q/4114095/119963">Revert to a previous Git commit</a>".</p> <p>If you're trying to understand <code>git reset</code> better, please see "<a href="https://stackoverflow.com/questions/2530060/can-you-explain-what-git-reset-does-in-plain-english">Can you explain what "git reset" does in plain English?</a>".</p> <hr> <p>If you know you want to use <code>git reset</code>, it still depends what you mean by "uncommit". If all you want to do is undo the act of committing, leaving everything else intact, use:</p> <pre><code>git reset --soft HEAD^ </code></pre> <p>If you want to undo the act of committing and everything you'd staged, but leave the work tree (your files intact):</p> <pre><code>git reset HEAD^ </code></pre> <p>And if you actually want to <em>completely</em> undo it, <strong><em>throwing away all uncommitted changes, resetting everything to the previous commit</em></strong> (as the original question asked):</p> <pre><code>git reset --hard HEAD^ </code></pre> <hr> <p>The original question also asked it's <code>HEAD^</code> not <code>HEAD</code>. <code>HEAD</code> refers to the current commit - generally, the tip of the currently checked-out branch. The <code>^</code> is a notation which can be attached to <em>any</em> commit specifier, and means "the commit before". So, <code>HEAD^</code> is the commit before the current one, just as <code>master^</code> is the commit before the tip of the master branch.</p> <p>Here's the portion of the <a href="http://linux.die.net/man/1/git-rev-parse" rel="noreferrer">git-rev-parse documentation</a> describing all of the ways to specify commits (<code>^</code> is just a basic one among many).</p>

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