$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6.git /var/lib/mock/f38-build-side-42-init-devel-570422-25908/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-570422-25908/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6'...
$ git fetch origin cef72848df1d78805644d2bf3e750e17fd253adc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6
 * [new ref]         cef72848df1d78805644d2bf3e750e17fd253adc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cef7284 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild