$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3.git /var/lib/mock/f38-build-side-43-rust-devel-1397156-31052/root/chroot_tmpdir/scmroot/rust-pyo3
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397156-31052/root/chroot_tmpdir/scmroot/rust-pyo3'...
$ git fetch origin dc59d9a6ba4fe9e31ba1ce5ad2626f3a4f205668:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3
 * [new ref]         dc59d9a6ba4fe9e31ba1ce5ad2626f3a4f205668 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc59d9a Update to version 0.19.2; Fixes RHBZ#2228011