$ git clone -n https://src.fedoraproject.org/rpms/coreutils.git /var/lib/mock/f40-build-2207509-52086/root/chroot_tmpdir/scmroot/coreutils
Cloning into '/var/lib/mock/f40-build-2207509-52086/root/chroot_tmpdir/scmroot/coreutils'...
$ git fetch origin bf0817f5a59c71d2a72363e457baa5ff8f80cd27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coreutils
 * [new ref]         bf0817f5a59c71d2a72363e457baa5ff8f80cd27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf0817f new upstream release 9.4