$ git clone -n https://src.fedoraproject.org/rpms/rust-libbpf-cargo.git /var/lib/mock/f40-build-2712609-72035/root/chroot_tmpdir/scmroot/rust-libbpf-cargo
Cloning into '/var/lib/mock/f40-build-2712609-72035/root/chroot_tmpdir/scmroot/rust-libbpf-cargo'...
$ git fetch origin 710b3b8bd32243f9bb6a9907d9b2151c6345aca6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libbpf-cargo
 * [new ref]         710b3b8bd32243f9bb6a9907d9b2151c6345aca6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 710b3b8 Update to 0.22.1 (rhbz#2256879)