$ git clone -n https://src.fedoraproject.org/rpms/freeradius.git /var/lib/mock/f40-build-2207992-52110/root/chroot_tmpdir/scmroot/freeradius
Cloning into '/var/lib/mock/f40-build-2207992-52110/root/chroot_tmpdir/scmroot/freeradius'...
$ git fetch origin 1793f410aa789704b5ac0be9cf7d0eaece906d1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freeradius
 * [new ref]         1793f410aa789704b5ac0be9cf7d0eaece906d1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1793f41 Fix C compatibility issue in configure script