DOC: Add note about shallow clones in contributing guide (pandas-dev#34690)

Co-authored-by: Uwe L. Korn <[email protected]>

Author: gglanzani

doc/source/development/contributing.rst

@@ -136,6 +136,10 @@ want to clone your fork to your machine::
 This creates the directory `pandas-yourname` and connects your repository to
 the upstream (main project) *pandas* repository.
 
+Note that performing a shallow clone (with ``--depth==N``, for some ``N`` greater
+or equal to 1) might break some tests and features as ``pd.show_versions()``
+as the version number cannot be computed anymore.
+
 .. _contributing.dev_env:
 
 Creating a development environment