  Co$_3$Sn$_2$S$_2$ has been established as a prototype of magnetic Weyl
semimetal, exhibiting a ''giant'' anomalous Hall effect in its ferromagnetic
phase. An attractive feature of this material is that Weyl points lie close to
Fermi level, so that one can expect a high reactivity of the topological
properties to hole or electron doping. We present here a direct observation
with Angle Resolved Photoemission Spectroscopy of the evolution of the
electronic structure under different types of substitutions : In for Sn (hole
doping outside the kagome Co plane), Fe for Co (hole doping inside the kagome
Co plane) and Ni for Co (electron doping inside the kagome Co plane). We
observe clear shifts of selected bands, which are due both to doping and to the
reduction of the magnetic splitting by doping. We discriminate between the two
by studying the temperature evolution from ferromagnetic to paramagnetic state.
We discuss these shifts with the help of DFT calculations using the Virtual
Crystal Approximation. We find that these calculations reproduce rather well
the evolution with In, but largely fail to capture the effect of Fe and Ni,
where local behavior at the impurity site plays an important role.
