$ git clone -n https://src.fedoraproject.org/rpms/rust-derive-new.git /var/lib/mock/f40-build-2711999-71928/root/chroot_tmpdir/scmroot/rust-derive-new
Cloning into '/var/lib/mock/f40-build-2711999-71928/root/chroot_tmpdir/scmroot/rust-derive-new'...
$ git fetch origin 64e1fb989b8e080b6f39a1faf873cdae897f4560:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive-new
 * [new ref]         64e1fb989b8e080b6f39a1faf873cdae897f4560 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64e1fb9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild