$ git clone -n https://src.fedoraproject.org/rpms/range-v3.git /var/lib/mock/f40-build-799496-142438/root/chroot_tmpdir/scmroot/range-v3
Cloning into '/var/lib/mock/f40-build-799496-142438/root/chroot_tmpdir/scmroot/range-v3'...
$ git fetch origin 54afa942f4ef2a164e0e8f3ad6aa5855c8742bae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/range-v3
 * [new ref]         54afa942f4ef2a164e0e8f3ad6aa5855c8742bae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54afa94 Fixed FTBFS on F40+.