The branch 4.4/keyboard-shortcuts was deleted and repushed:
was 5bef26ede4fe351c9a7b23aa99b8db3a8fc95531
now 967fc2fefcbf27d7d40e0f29ad2c126bd00de301
1: 5bef26e < -: ------- add global / page-specific keyboard shortcuts
-: ------- > 1: 967fc2f add global / page-specific keyboard shortcuts