Subtree 1.22 merged in docs

Signed-off-by: Lunny Xiao <[email protected]>

versioned_docs/version-1.22/usage/agit-support.en-us.md

@@ -0,0 +1,52 @@
+---
+date: "	2022-09-01T20:50:42+0000"
+title: "Agit Setup"
+slug: "agit-setup"
+sidebar_position: 12
+toc: false
+draft: false
+aliases:
+  - /en-us/agit-setup
+menu:
+  sidebar:
+    parent: "usage"
+    name: "Agit Setup"
+    sidebar_position: 12
+    identifier: "agit-setup"
+---
+
+# Agit Setup
+
+In Gitea `1.13`, support for [agit](https://git-repo.info/en/2020/03/agit-flow-and-git-repo/) was added.
+**Note**: git version 2.29 or higher is required on the server side for this to work.
+
+## Creating PRs with Agit
+
+Agit allows to create PRs while pushing code to the remote repo.
+This can be done by pushing to the branch followed by a specific refspec (a location identifier known to git).
+The following example illustrates this:
+
+```shell
+git push origin HEAD:refs/for/main
+```
+
+The command has the following structure:
+
+- `HEAD`: The target branch
+- `origin`: The target repository (not a fork!)
+- `HEAD`: The local branch containing the changes you are proposing
+- `refs/<for|draft|for-review>/<branch>`: The target PR type and configuration
+  - `for`: Create a normal PR with `<branch>` as the target branch
+  - `draft`/`for-review`: Currently ignored silently
+  - `<branch>/`: The branch you want your changes to be merged into
+- `-o <topic|title|description>`: Options for the PR
+  - `topic`: The topic of this change. It will become the name of the branch holding the changes waiting for review.  This is REQUIRED to trigger a pull request.
+  - `title`: The PR title (optional but recommended), only used for topics not already having an associated PR.
+  - `description`: The PR description (optional but recommended), only used for topics not already having an associated PR.
+  - `force-push`: confirm force update the target branch
+
+Here's another advanced example for creating a new PR targeting `main` with `topic`, `title`, and `description`:
+
+```shell
+git push origin HEAD:refs/for/main -o topic="Topic of my PR" -o title="Title of the PR" -o description="# The PR Description\nThis can be **any** markdown content.\n- [x] Ok"
+```