using notes to provide pull-notifications

quick demo

demo:/tmp$ mkdir DEMO && cd DEMO && git init . && touch a && git add a && git commit -am 'initial'
    
    Initialized empty Git repository in /tmp/DEMO/.git/
        [master (root-commit) 29fa231] initial
    1 file changed, 0 insertions(+), 0 deletions(-)
        create mode 100644 a
        
demo:/tmp/DEMO$ for a in first second third fourth fifth sixth; do echo $a>a; git commit -am "$a commit"; done

        [master 6cca37e] first commit
    1 file changed, 1 insertion(+)
        [master 676ba7b] second commit
    1 file changed, 1 insertion(+), 1 deletion(-)
        [master e1026f5] third commit
    1 file changed, 1 insertion(+), 1 deletion(-)
        [master 80e0ccf] fourth commit
    1 file changed, 1 insertion(+), 1 deletion(-)
        [master f01839b] fifth commit
    1 file changed, 1 insertion(+), 1 deletion(-)
        [master 745a335] sixth commit
    1 file changed, 1 insertion(+), 1 deletion(-)
        
demo:/tmp/DEMO$ git notes add 6cca37e -m 'Starting from this version, make sure
> 
>  - you add bla to your local .gitignore
>  - you use merge policy "ours" for all files in /config/dev/ (edit your
>    .gitattributes)
> '

demo:/tmp/DEMO$ git notes add f01839b -m 'random note'

demo:/tmp/DEMO$ git checkout -b fake_remote 29fa231

Switched to a new branch 'fake_remote'

demo:/tmp/DEMO$ git log --oneline 

    29fa231 initial

demo:/tmp/DEMO$ git pull . master 
    
    From .
    * branch            master     -> FETCH_HEAD
    Updating 29fa231..745a335
    Fast-forward
        a | 1 +
    1 file changed, 1 insertion(+)
        
demo:/tmp/DEMO$ git rev-list HEAD@{1}...FETCH_HEAD | while read sha1; do echo "$(git describe --always $sha1): $(git notes show $sha1 2>/dev/null)"; done

    745a335: 
    f01839b: random note
    80e0ccf: 
    e1026f5: 
    676ba7b: 
    6cca37e: Starting from this version, make sure

    - you add bla to your local .gitignore
    - you use merge policy "ours" for all files in /config/dev/ (edit your
    .gitattributes)