$ git clone -n https://src.fedoraproject.org/rpms/rust-ciborium-io.git /var/lib/mock/f40-build-2659507-66918/root/chroot_tmpdir/scmroot/rust-ciborium-io
Cloning into '/var/lib/mock/f40-build-2659507-66918/root/chroot_tmpdir/scmroot/rust-ciborium-io'...
$ git fetch origin a6570da82338a4b33f74b026b4e219a939447362:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ciborium-io
 * [new ref]         a6570da82338a4b33f74b026b4e219a939447362 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6570da Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild