Note that helm lint should warn about git deps

Signed-off-by: Dominykas Blyžė <hello@dominykas.com>

hips/hip-00NN.md

@@ -55,6 +55,8 @@ dependencies:
   version: "main"
 ```
 
+### Installation
+
 When Helm is installing a dependency from git, it should:
 
 - create a temporary directory
@@ -64,6 +66,10 @@ When Helm is installing a dependency from git, it should:
 - treat the cloned git repo similar to a `file:///path/to/temp/dir` style requirement; use `chart.LoadDir` to load that directory (which in turn applied the logic for filtering the files through `.helmignore`) and archives it to `charts/`
 - delete the temp dir
 
+### Linting
+
+`helm lint` should print a warning when a chart contains a git-based dependency, primarily because git references are mutable.
+
 ## Backwards compatibility  
 
 This is backwards compatible from Helm perspective - the existing formats for `dependencies` are still supported.