 (e.g. "git log" traversal
stops after showing them; "git fsck" does not complain saying
the commits listed on their "parent" lines do not exist).</p>
</div>
<div class="paragraph">
<p>Each line contains exactly one object name. When read, a commit_graft
will be constructed, which has nr_parent &lt; 0 to make it easier
to discern from user provided grafts.</p>
</div>
<div class="paragraph">
<p>Note that the shallow feature could not be changed easily to
use replace refs: a commit containing a <code>mergetag