ORIG_HEAD

Is there a really good reason why git-pull-script runs are deleting
that file now?

All my scripts use ORIG_HEAD so that I can look at the changelog after
I pull from someone.  There is now no record left around of what the
head was before the pull.

I could take the SHA1 output by the git-pull-script, but it'd be nice
if it was sitting under .git somewhere in case I forget to record
that information somewhere.

This is my "git-mklog" script, for example:

#/bin/sh

git-rev-tree HEAD ^ORIG_HEAD | sort -n | cut -d' ' -f2 >commit-list
cat commit-list | git-diff-tree --stdin -p | diffstat -p1 
echo ''
for i in $(cat commit-list)
do
    git-diff-tree -s -v ${i}
    git-diff-tree -p ${i} | diffstat -p1
    echo ''
done

rm -f commit-list