$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-polenta.git /var/lib/mock/f38-build-side-42-init-devel-812967-28311/root/chroot_tmpdir/scmroot/gap-pkg-polenta
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-812967-28311/root/chroot_tmpdir/scmroot/gap-pkg-polenta'...
$ git fetch origin b2de2ec2ea9a2b8e94696e54f24ed174cf04f685:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-polenta
 * [new ref]         b2de2ec2ea9a2b8e94696e54f24ed174cf04f685 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2de2ec Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild