made the pack completely portable and wrote relevent bat files to go with it

gitportable/mingw64/share/doc/git-doc/RelNotes/2.47.1.adoc

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+Git 2.47.1 Release Notes
+========================
+
+This is to flush accumulated fixes since 2.47.0 on the 'master'
+front down to the maintenance track.
+
+
+Fixes since Git 2.47
+--------------------
+
+ * Use after free and double freeing at the end in "git log -L... -p"
+   had been identified and fixed.
+
+ * On macOS, fsmonitor can fall into a race condition that results in
+   a client waiting forever to be notified for an event that have
+   already happened.  This problem has been corrected.
+
+ * "git maintenance start" crashed due to an uninitialized variable
+   reference, which has been corrected.
+
+ * Fail gracefully instead of crashing when attempting to write the
+   contents of a corrupt in-core index as a tree object.
+
+ * A "git fetch" from the superproject going down to a submodule used
+   a wrong remote when the default remote names are set differently
+   between them.
+
+ * The "gitk" project tree has been synchronized again with its new
+   maintainer, Johannes Sixt.
+
+Also contains minor documentation updates and code clean-ups.