$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3-ffi.git /var/lib/mock/f39-build-2204287-51953/root/chroot_tmpdir/scmroot/rust-pyo3-ffi
Cloning into '/var/lib/mock/f39-build-2204287-51953/root/chroot_tmpdir/scmroot/rust-pyo3-ffi'...
$ git fetch origin c378e28ffcb08700b78e2ef1d2f00f409cb219c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3-ffi
 * [new ref]         c378e28ffcb08700b78e2ef1d2f00f409cb219c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c378e28 Update to version 0.20.2; Fixes RHBZ#2256870