$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3-ffi.git /var/lib/mock/f45-build-44113-810/root/chroot_tmpdir/scmroot/rust-pyo3-ffi
Cloning into '/var/lib/mock/f45-build-44113-810/root/chroot_tmpdir/scmroot/rust-pyo3-ffi'...
$ git fetch origin 77451e8e7edc90b7c612357776d73b0edf0e5233:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3-ffi
 * [new ref]         77451e8e7edc90b7c612357776d73b0edf0e5233 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77451e8 Update to version 0.29.2; Fixes RHBZ#2511819