$ git clone -n https://src.fedoraproject.org/rpms/vdr-femon.git /var/lib/mock/f42-build-864182-172199/root/chroot_tmpdir/scmroot/vdr-femon
Cloning into '/var/lib/mock/f42-build-864182-172199/root/chroot_tmpdir/scmroot/vdr-femon'...
$ git fetch origin 6f3848f6fd4cbcc0a27b88f41045f0d01e44046c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-femon
 * [new ref]         6f3848f6fd4cbcc0a27b88f41045f0d01e44046c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f3848f Rebuilt for new VDR API version 2.7.2