$ git clone -n https://src.fedoraproject.org/rpms/docparser.git /var/lib/mock/f42-build-863046-171350/root/chroot_tmpdir/scmroot/docparser
Cloning into '/var/lib/mock/f42-build-863046-171350/root/chroot_tmpdir/scmroot/docparser'...
$ git fetch origin 05f1d71148ee5172aed045e8b0f4cd3fa68ce717:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docparser
 * [new ref]         05f1d71148ee5172aed045e8b0f4cd3fa68ce717 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05f1d71 rebuild for tinyxml2