$ git clone -n https://src.fedoraproject.org/rpms/python3.13.git /var/lib/mock/f39-build-1572783-37791/root/chroot_tmpdir/scmroot/python3.13
Cloning into '/var/lib/mock/f39-build-1572783-37791/root/chroot_tmpdir/scmroot/python3.13'...
$ git fetch origin a4428d6f284cb103ab6a05ea08fb2307543e975c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3.13
 * [new ref]         a4428d6f284cb103ab6a05ea08fb2307543e975c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4428d6 Initial Python 3.13 package forked from Python 3.12