$ git clone -n https://src.fedoraproject.org/rpms/rust-libz-sys.git /var/lib/mock/f40-build-2642220-66447/root/chroot_tmpdir/scmroot/rust-libz-sys
Cloning into '/var/lib/mock/f40-build-2642220-66447/root/chroot_tmpdir/scmroot/rust-libz-sys'...
$ git fetch origin a3b29e331a2eacb7b6a24f674bf8f0f3627cd029:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libz-sys
 * [new ref]         a3b29e331a2eacb7b6a24f674bf8f0f3627cd029 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3b29e3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild