docs: repo-hooks: fix cwd details
The hooks are run from the top of the manifest checkout, not from the
individual git repos. It's up to individual hooks to chdir as needed.
diff --git a/docs/repo-hooks.md b/docs/repo-hooks.md
index c8eb945..76113cc 100644
@@ -61,9 +61,14 @@
long running operations occur, but long/verbose output should be used only if
the hook ultimately fails.
-The hook runs from the top level of the git repo where the operation is started.
-e.g. If you're in the git repo `src/foo/`, that is where the hook runs, even if
-the `repo` command was started from a subdir like `src/foo/bar/`.
+The hook runs from the top level of the repo client where the operation is
+For example, if the repo client is under `~/tree/`, then that is where the hook
+runs, even if you ran repo in a git repository at `~/tree/src/foo/`, or in a
+subdirectory of that git repository in `~/tree/src/foo/bar/`.
+Hooks frequently start off by doing a `os.chdir` to the specific project they're
+called on (see below) and then changing back to the original dir when they're
Python's `sys.path` is modified so that the top of repohooks directory comes
first. This should help simplify the hook logic to easily allow importing of