$ git clone -n https://src.fedoraproject.org/rpms/python-mathics3.git /var/lib/mock/f38-build-side-42-init-devel-612102-26277/root/chroot_tmpdir/scmroot/python-mathics3
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-612102-26277/root/chroot_tmpdir/scmroot/python-mathics3'...
$ git fetch origin adbafe54c6a02ec751e86cd99411bfa604bb15a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mathics3
 * [new ref]         adbafe54c6a02ec751e86cd99411bfa604bb15a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at adbafe5 Backport upstream bugfixes and add extras subpackages