Relative path to invocationdir instead rootdir.

changelog/7076.trivial.rst

@@ -0,0 +1 @@
+The path of file skipped by ``@pytest.mark.skip`` in the SKIPPED report is now relative to invocation directory. Previously it was relative to root directory.

src/_pytest/skipping.py

@@ -169,6 +169,7 @@ def pytest_runtest_makereport(item, call):
         # the location of where the skip exception was raised within pytest
         _, _, reason = rep.longrepr
         filename, line = item.location[:2]
+        filename = item.config.rootdir.join(filename)
         rep.longrepr = filename, line + 1, reason