We have had rquests in IRC for this package to be in EPEL8. Could you see about branching and building for EPEL8?
And I should have checked and seen this was in epel8-playground. I didn't see it in the regular which is ok.
It's not in regular or EPEL6-7 yet, but I'm going to add it. The builds are available in testing [1-3] if someone wants to try them out.
 EPEL-6 https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-bde49c72a7
 EPEL-7 https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-fcfbdc36a1
 EPEL-8 https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-6bf77e2aad
FEDORA-EPEL-2019-6bf77e2aad has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-6bf77e2aad
sshguard-2.4.0-11.el8 has been pushed to the Fedora EPEL 8 stable repository. If problems still persist, please make note of it in this bug report.