$ git clone -n https://src.fedoraproject.org/rpms/rust-libbpf-cargo.git /var/lib/mock/f38-build-side-43-rust-devel-1408677-31387/root/chroot_tmpdir/scmroot/rust-libbpf-cargo
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1408677-31387/root/chroot_tmpdir/scmroot/rust-libbpf-cargo'...
$ git fetch origin 4f7cd69ab81b9587a53390919b4806ab2e1772ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libbpf-cargo
 * [new ref]         4f7cd69ab81b9587a53390919b4806ab2e1772ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f7cd69 Update to 0.21.2