$ git clone -n https://src.fedoraproject.org/rpms/gnuradio.git /var/lib/mock/f41-build-side-1-2819432-33085/root/chroot_tmpdir/scmroot/gnuradio
Cloning into '/var/lib/mock/f41-build-side-1-2819432-33085/root/chroot_tmpdir/scmroot/gnuradio'...
$ git fetch origin ac90d9d71e49ae45e028082dd93ffbaf042e7f67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnuradio
 * [new ref]         ac90d9d71e49ae45e028082dd93ffbaf042e7f67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac90d9d Fixed icon mode, dropped the executable bit