Update cheatsheets

git-write-tree

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# git write-tree
+
+> Low level utility to create a tree object from the current index.
+> More information: <https://git-scm.com/docs/git-write-tree>.
+
+- Create a tree object from the current index:
+
+`git write-tree`
+
+- Create a tree object without checking whether objects referenced by the directory exist in the object database:
+
+`git write-tree --missing-ok`
+
+- Create a tree object that represents a subdirectory (used to write the tree object for a subproject in the named subdirectory):
+
+`git write-tree --prefix {{subdirectory}}/`