$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-polycyclic.git /var/lib/mock/f38-build-side-42-init-devel-846543-28422/root/chroot_tmpdir/scmroot/gap-pkg-polycyclic
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-846543-28422/root/chroot_tmpdir/scmroot/gap-pkg-polycyclic'...
$ git fetch origin 2d38ef868141c9dffe6ae4143fe1b7b09d830c88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-polycyclic
 * [new ref]         2d38ef868141c9dffe6ae4143fe1b7b09d830c88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d38ef8 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild