$ git clone -n https://src.fedoraproject.org/rpms/python-cryptography.git /var/lib/mock/f45-build-39733-751/root/chroot_tmpdir/scmroot/python-cryptography
Cloning into '/var/lib/mock/f45-build-39733-751/root/chroot_tmpdir/scmroot/python-cryptography'...
$ git fetch origin e419312912a928307f1cda0e39109fdd7ced0402:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cryptography
 * [new ref]         e419312912a928307f1cda0e39109fdd7ced0402 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e419312 Update to cryptography v50.0.0