$ git clone -n https://src.fedoraproject.org/rpms/node-exporter.git /var/lib/mock/f45-build-19717-554/root/chroot_tmpdir/scmroot/node-exporter
Cloning into '/var/lib/mock/f45-build-19717-554/root/chroot_tmpdir/scmroot/node-exporter'...
$ git fetch origin 6598f5b21842c05f4da18f431efb90bd0fa2c231:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/node-exporter
 * [new ref]         6598f5b21842c05f4da18f431efb90bd0fa2c231 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6598f5b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild