$ git clone -n https://src.fedoraproject.org/rpms/rust-pyo3_0.20.git /var/lib/mock/f41-build-1283252-23209/root/chroot_tmpdir/scmroot/rust-pyo3_0.20
Cloning into '/var/lib/mock/f41-build-1283252-23209/root/chroot_tmpdir/scmroot/rust-pyo3_0.20'...
$ git fetch origin 18f88e226a302bd92f8cd5a32efe71ddf2084d5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pyo3_0.20
 * [new ref]         18f88e226a302bd92f8cd5a32efe71ddf2084d5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18f88e2 Backport support for Python 3.13