$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6.git /var/lib/mock/f39-build-1505145-35108/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6
Cloning into '/var/lib/mock/f39-build-1505145-35108/root/chroot_tmpdir/scmroot/golang-gopkg-rethinkdb-6'...
$ git fetch origin 2d1b6cc35751646bfb401e4e04bb68aac274cfe4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-rethinkdb-6
 * [new ref]         2d1b6cc35751646bfb401e4e04bb68aac274cfe4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d1b6cc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild