que.
The entire history leading up to a commit can be vouched for by signing
just that commit.  A fourth object type, the tag, is provided for this
purpose.</p>
</div>
<div class="paragraph">
<p>When first created, objects are stored in individual files, but for
efficiency may later be compressed together into "pack files".</p>
</div>
<div class="paragraph">
<p>Named pointers called refs mark interesting points in history.  A ref
may contain the SHA-1 name of an object or the name of another ref.  Refs
with