$ git clone -n https://src.fedoraproject.org/rpms/rust-time-macros-impl.git /var/lib/mock/f40-build-2659140-66918/root/chroot_tmpdir/scmroot/rust-time-macros-impl
Cloning into '/var/lib/mock/f40-build-2659140-66918/root/chroot_tmpdir/scmroot/rust-time-macros-impl'...
$ git fetch origin c69d70a8439bce28e2a6c03e4f2fb3a583e2667c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time-macros-impl
 * [new ref]         c69d70a8439bce28e2a6c03e4f2fb3a583e2667c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c69d70a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild