$ git clone -n https://src.fedoraproject.org/rpms/emacs-with-editor.git /var/lib/mock/f42-build-3273240-41310/root/chroot_tmpdir/scmroot/emacs-with-editor
Cloning into '/var/lib/mock/f42-build-3273240-41310/root/chroot_tmpdir/scmroot/emacs-with-editor'...
$ git fetch origin c54ba06732ce00a66fcca8c518a68377cae3bf7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-with-editor
 * [new ref]         c54ba06732ce00a66fcca8c518a68377cae3bf7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c54ba06 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild