$ git clone -n https://src.fedoraproject.org/rpms/rust-bytecount.git /var/lib/mock/f40-build-2639966-66383/root/chroot_tmpdir/scmroot/rust-bytecount
Cloning into '/var/lib/mock/f40-build-2639966-66383/root/chroot_tmpdir/scmroot/rust-bytecount'...
$ git fetch origin 04a3e0afddf1d20eaed81badc2d6c69abd25bbd9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bytecount
 * [new ref]         04a3e0afddf1d20eaed81badc2d6c69abd25bbd9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04a3e0a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild