$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-polymaking.git /var/lib/mock/f38-build-side-42-init-devel-650281-26477/root/chroot_tmpdir/scmroot/gap-pkg-polymaking
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-650281-26477/root/chroot_tmpdir/scmroot/gap-pkg-polymaking'...
$ git fetch origin d366f6bffba4a8884fc4ae097b0f6e91b0f7c2b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-polymaking
 * [new ref]         d366f6bffba4a8884fc4ae097b0f6e91b0f7c2b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d366f6b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild