$ git clone -n https://src.fedoraproject.org/rpms/rubygem-aruba.git /var/lib/mock/f38-build-side-42-init-devel-629676-26375/root/chroot_tmpdir/scmroot/rubygem-aruba
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-629676-26375/root/chroot_tmpdir/scmroot/rubygem-aruba'...
$ git fetch origin db4cdc92f27e610f6d6d6c0ec74703095afe2a3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-aruba
 * [new ref]         db4cdc92f27e610f6d6d6c0ec74703095afe2a3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db4cdc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild