$ git clone -n https://src.fedoraproject.org/rpms/rust-string_cache_codegen.git /var/lib/mock/f40-build-2643666-66490/root/chroot_tmpdir/scmroot/rust-string_cache_codegen
Cloning into '/var/lib/mock/f40-build-2643666-66490/root/chroot_tmpdir/scmroot/rust-string_cache_codegen'...
$ git fetch origin 40e70cd544da6c527808871835a9c427030cdd0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-string_cache_codegen
 * [new ref]         40e70cd544da6c527808871835a9c427030cdd0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40e70cd Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild