feat: add ability to initialize a git repository out of band

This is useful in contexts where the repository directory may be created and interacted with via git-http-backend or other methods of updating a repository.

plugins/git/subcommands/default

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_AVAILABLE_PATH/git/internal-functions"
+
+cmd-git-help "git:help"

plugins/git/subcommands/initialize

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+source "$PLUGIN_AVAILABLE_PATH/git/functions"
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+git-initialize-cmd() {
+  declare desc="initialize a git repository for an app"
+  local cmd="git:initialize" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
+  declare APP="$1"
+  is_valid_app_name "$APP"
+
+  dokku_log_info1_quiet "Initializing git repository for $APP"
+  fn-git-create-hook "$APP"
+}
+
+git-initialize-cmd "$@"

plugins/git/subcommands/set

@@ -14,7 +14,7 @@ fn-in-array() {
 }
 
 git-set-cmd() {
-  declare desc="sets a git configuration value for an app"
+  declare desc="set or clear a git property for an app"
   local cmd="git:set" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
   declare APP="$1" KEY="$2" VALUE="$3"
   local VALID_KEYS=("deploy-branch" "rev-env-var")