The repository operations/debs/poolcounter-prometheus-exporter uses poolcounter as a prefix when all the other debs use prometheus-<name>-exporter. See list at:
https://gerrit.wikimedia.org/r/#/admin/projects/?filter=prometheus
The Gerrit repository should be moved to operations/debs/prometheus-poolcounter-exporter
The Debian package should be renamed as well (via debian/changelog, debian/control)