$ git clone -n https://src.fedoraproject.org/rpms/libxsmm.git /var/lib/mock/f40-build-790725-136817/root/chroot_tmpdir/scmroot/libxsmm
Cloning into '/var/lib/mock/f40-build-790725-136817/root/chroot_tmpdir/scmroot/libxsmm'...
$ git fetch origin 410f0119edbb02a4d12a55e8a3ba862160b06420:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxsmm
 * [new ref]         410f0119edbb02a4d12a55e8a3ba862160b06420 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 410f011 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild