$ git clone -n https://src.fedoraproject.org/rpms/rust-slog-async.git /var/lib/mock/f40-build-2683331-67970/root/chroot_tmpdir/scmroot/rust-slog-async
Cloning into '/var/lib/mock/f40-build-2683331-67970/root/chroot_tmpdir/scmroot/rust-slog-async'...
$ git fetch origin 8b40a7d59bff50def1c49313bdc6b45653dce56c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-slog-async
 * [new ref]         8b40a7d59bff50def1c49313bdc6b45653dce56c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b40a7d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild