$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinnopacity.git /var/lib/mock/f42-build-side-1-3539510-46565/root/chroot_tmpdir/scmroot/vdr-skinnopacity
Cloning into '/var/lib/mock/f42-build-side-1-3539510-46565/root/chroot_tmpdir/scmroot/vdr-skinnopacity'...
$ git fetch origin b58de0e3ed81ccccad2bb7c55b1a6a669e9c2883:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinnopacity
 * [new ref]         b58de0e3ed81ccccad2bb7c55b1a6a669e9c2883 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b58de0e Rebuilt for new VDR API version 2.7.4