git: updated with new random utility commands.

git.md

@@ -1,13 +1,32 @@
 # Git
 
+### Pronouns
+- us: changes on the branch I am rebasing onto (eg. the master), usually "the good official one"
+- they: changes of the branch I am rebasing (eg. feature branch)
+
+### Search keyword
+```git log -S <keyword>```
+
+### Fetch and remove deleted branches
+```git fetch --prune```
+
+### Worktree
+```
+git worktree add <path> <branch>
+git worktree remove [--force] <path>
+```
+Use force if you have initialized submodules in the worktree.
+
+### Rebase multiple divergent branches
+```git rebase --interactive --onto <newparent> <oldparent>```
+
 ### What commit added a certain file?
 ```git log --diff-filter=A -- path/file```
 
-
+### Changes of a certain file
-### Edits of a certain file
 ```git diff <branch> -- path/file```
 
-### Git pull
+### Git pull strategy
 ```
 hint: Pulling without specifying how to reconcile divergent branches is
 hint: discouraged. You can squelch this message by running one of the following