$ git clone -n https://src.fedoraproject.org/rpms/micropython.git /var/lib/mock/f38-build-side-42-init-devel-785091-27955/root/chroot_tmpdir/scmroot/micropython
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-785091-27955/root/chroot_tmpdir/scmroot/micropython'...
$ git fetch origin fce65a35bdc524b66aa7a5496c0e43c479869d3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/micropython
 * [new ref]         fce65a35bdc524b66aa7a5496c0e43c479869d3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fce65a3 Fix FTBFS with GCC 13