$ git clone -n https://src.fedoraproject.org/rpms/iso-codes.git /var/lib/mock/f40-build-2246663-53831/root/chroot_tmpdir/scmroot/iso-codes
Cloning into '/var/lib/mock/f40-build-2246663-53831/root/chroot_tmpdir/scmroot/iso-codes'...
$ git fetch origin 4155bcad7cfc6dea5261fbc39a22e4203f07e988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iso-codes
 * [new ref]         4155bcad7cfc6dea5261fbc39a22e4203f07e988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4155bca Update to 4.16.0 version (#2258341)