_revisions">SPECIFYING REVISIONS</h2>
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<div class="paragraph">
<p>A revision parameter <em>&lt;rev&gt;</em> typically, but not necessarily, names a
commit object.  It uses what is called an <em>extended SHA-1</em>
syntax.  Here are various ways to spell object names.  The
ones listed near the end of this list name trees and
blobs contained in a commit.</p>
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<div class="title">Note</div>
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<td class="content"