$ git clone -n https://src.fedoraproject.org/rpms/lgogdownloader.git /var/lib/mock/f42-build-863052-171350/root/chroot_tmpdir/scmroot/lgogdownloader
Cloning into '/var/lib/mock/f42-build-863052-171350/root/chroot_tmpdir/scmroot/lgogdownloader'...
$ git fetch origin f256d166a20cf8278b5e9d94de70cc46f6cc1830:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lgogdownloader
 * [new ref]         f256d166a20cf8278b5e9d94de70cc46f6cc1830 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f256d16 rebuild for tinyxml2