$ git clone -n https://src.fedoraproject.org/rpms/gnuradio.git /var/lib/mock/f42-build-3357693-45030/root/chroot_tmpdir/scmroot/gnuradio
Cloning into '/var/lib/mock/f42-build-3357693-45030/root/chroot_tmpdir/scmroot/gnuradio'...
$ git fetch origin 97f9db539688cb589b82808551d227b715395a94:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnuradio
 * [new ref]         97f9db539688cb589b82808551d227b715395a94 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97f9db5 Added workaround for lib64 detection