$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinnopacity.git /var/lib/mock/f40-build-804546-144553/root/chroot_tmpdir/scmroot/vdr-skinnopacity
Cloning into '/var/lib/mock/f40-build-804546-144553/root/chroot_tmpdir/scmroot/vdr-skinnopacity'...
$ git fetch origin 237a3ab52916fd14d152ce72e555e84e0124f3ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinnopacity
 * [new ref]         237a3ab52916fd14d152ce72e555e84e0124f3ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 237a3ab Rebuilt for new VDR API version