$ git clone -n https://src.fedoraproject.org/rpms/rust2rpm-helper.git /var/lib/mock/f42-build-3275541-41321/root/chroot_tmpdir/scmroot/rust2rpm-helper
Cloning into '/var/lib/mock/f42-build-3275541-41321/root/chroot_tmpdir/scmroot/rust2rpm-helper'...
$ git fetch origin 065aad381e62d87a895dd2a3c9b76361a211b8ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust2rpm-helper
 * [new ref]         065aad381e62d87a895dd2a3c9b76361a211b8ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 065aad3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild