$ git clone -n https://src.fedoraproject.org/rpms/prometheus-jmx-exporter.git /var/lib/mock/f38-build-side-42-init-devel-760372-27697/root/chroot_tmpdir/scmroot/prometheus-jmx-exporter
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-760372-27697/root/chroot_tmpdir/scmroot/prometheus-jmx-exporter'...
$ git fetch origin c677ee7bff49ebe59c1975ec4dfab5f22098cf7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/prometheus-jmx-exporter
 * [new ref]         c677ee7bff49ebe59c1975ec4dfab5f22098cf7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c677ee7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild