$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinnopacity.git /var/lib/mock/f42-build-864196-172199/root/chroot_tmpdir/scmroot/vdr-skinnopacity
Cloning into '/var/lib/mock/f42-build-864196-172199/root/chroot_tmpdir/scmroot/vdr-skinnopacity'...
$ git fetch origin 499649fbd25f6f79a02558ce3a13cfbeb0a46b42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinnopacity
 * [new ref]         499649fbd25f6f79a02558ce3a13cfbeb0a46b42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 499649f Update to 1.1.19