$ git clone -n https://src.fedoraproject.org/rpms/rust-derive_builder0.9.git /var/lib/mock/f40-build-2651213-66881/root/chroot_tmpdir/scmroot/rust-derive_builder0.9
Cloning into '/var/lib/mock/f40-build-2651213-66881/root/chroot_tmpdir/scmroot/rust-derive_builder0.9'...
$ git fetch origin 2d63da54d7901efc9e6861a938377464d764780e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive_builder0.9
 * [new ref]         2d63da54d7901efc9e6861a938377464d764780e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d63da5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild