SOME IDIOT ON THE INTERNET MENTIONED TO USE WORKTREE COMMAND I BET THAT 
OVERWRITES THE DEFAULT AND FUCKS UP PEOPLE REPOSITORY, PRETTY FUCKING 
STUPID...

BUT IT DOES APPEAR GIT HAS SUPPORT FOR MULTIPLE WORKING TREES:

Git - git-worktree Documentation (git-scm.com) 
<https://git-scm.com/docs/git-worktree>

FINALLY.

NAME

git-worktree - Manage multiple working trees
<https://git-scm.com/docs/git-worktree#_synopsis>SYNOPSIS
git worktree add [-f] [--detach] [--checkout] [--lock [--reason <string>]] 
[-b <new-branch>] <path> [<commit-ish>] git worktree list [--porcelain] git 
worktree lock [--reason <string>] <worktree> git worktree move <worktree> 
<new-path> git worktree prune [-n] [-v] [--expire <expire>] git worktree 
remove [-f] <worktree> git worktree repair [<path>…​] git worktree unlock 
<worktree>
<https://git-scm.com/docs/git-worktree#_description>DESCRIPTION

Manage multiple working trees attached to the same repository.

A git repository can support multiple working trees, allowing you to check 
out more than one branch at a time. With git worktree add a new working 
tree is associated with the repository. This new working tree is called a 
"linked working tree" as opposed to the "main working tree" prepared by 
git-init[1] <https://git-scm.com/docs/git-init> or git-clone[1] 
<https://git-scm.com/docs/git-clone>. A repository has one main working 
tree (if it’s not a bare repository) and zero or more linked working trees. 
When you are done with a linked working tree, remove it with git worktree 
remove.

In its simplest form, git worktree add <path> automatically creates a new 
branch whose name is the final component of <path>, which is convenient if 
you plan to work on a new topic. For instance, git worktree add 
../hotfix creates new branch hotfix and checks it out at path ../hotfix. To 
instead work on an existing branch in a new working tree, use git worktree 
add <path> <branch>. On the other hand, if you just plan to make some 
experimental changes or do testing without disturbing existing development, 
it is often convenient to create a throwaway working tree not associated 
with any branch. For instance, git worktree add -d <path> creates a new 
working tree with a detached HEAD at the same commit as the current branch.

If a working tree is deleted without using git worktree remove, then its 
associated administrative files, which reside in the repository (see 
"DETAILS" below), will eventually be removed automatically 
(see gc.worktreePruneExpire in git-config[1] 
<https://git-scm.com/docs/git-config>), or you can run git worktree 
prune in the main or any linked working tree to clean up any stale 
administrative files.

If a linked working tree is stored on a portable device or network share 
which is not always mounted, you can prevent its administrative files from 
being pruned by issuing the git worktree lock command, optionally 
specifying --reason to explain why the working tree is locked.
<https://git-scm.com/docs/git-worktree#_commands>COMMANDS
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-addltpathgtltcommit-ishgt>add
 
<path> [<commit-ish>]

Create <path> and checkout <commit-ish> into it. The new working directory 
is linked to the current repository, sharing everything except working 
directory specific files such as HEAD, index, etc. As a 
convenience, <commit-ish> may be a bare "-", which is synonymous with @{-1}.

If <commit-ish> is a branch name (call it <branch>) and is not found, and 
neither -b nor -B nor --detach are used, but there does exist a tracking 
branch in exactly one remote (call it <remote>) with a matching name, treat 
as equivalent to:
$ git worktree add --track -b <branch> <path> <remote>/<branch>

If the branch exists in multiple remotes and one of them is named by 
the checkout.defaultRemote configuration variable, we’ll use that one for 
the purposes of disambiguation, even if the <branch> isn’t unique across 
all remotes. Set it to e.g. checkout.defaultRemote=origin to always 
checkout remote branches from there if <branch> is ambiguous but exists on 
the origin remote. See also checkout.defaultRemote in git-config[1] 
<https://git-scm.com/docs/git-config>.

If <commit-ish> is omitted and neither -b nor -B nor --detach used, then, 
as a convenience, the new working tree is associated with a branch (call 
it <branch>) named after $(basename <path>). If <branch> doesn’t exist, a 
new branch based on HEAD is automatically created as if -b <branch> was 
given. If <branch> does exist, it will be checked out in the new working 
tree, if it’s not checked out anywhere else, otherwise the command will 
refuse to create the working tree (unless --force is used).
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-list>
list

List details of each working tree. The main working tree is listed first, 
followed by each of the linked working trees. The output details include 
whether the working tree is bare, the revision currently checked out, the 
branch currently checked out (or "detached HEAD" if none), "locked" if the 
worktree is locked, "prunable" if the worktree can be pruned 
by prune command.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-lock>
lock

If a working tree is on a portable device or network share which is not 
always mounted, lock it to prevent its administrative files from being 
pruned automatically. This also prevents it from being moved or deleted. 
Optionally, specify a reason for the lock with --reason.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-move>
move

Move a working tree to a new location. Note that the main working tree or 
linked working trees containing submodules cannot be moved with this 
command. (The git worktree repair command, however, can reestablish the 
connection with linked working trees if you move the main working tree 
manually.)
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-prune>
prune

Prune working tree information in $GIT_DIR/worktrees.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-remove>
remove

Remove a working tree. Only clean working trees (no untracked files and no 
modification in tracked files) can be removed. Unclean working trees or 
ones with submodules can be removed with --force. The main working tree 
cannot be removed.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-repairltpathgt82308203>repair
 
[<path>…​]

Repair working tree administrative files, if possible, if they have become 
corrupted or outdated due to external factors.

For instance, if the main working tree (or bare repository) is moved, 
linked working trees will be unable to locate it. Running repair in the 
main working tree will reestablish the connection from linked working trees 
back to the main working tree.

Similarly, if a linked working tree is moved without using git worktree 
move, the main working tree (or bare repository) will be unable to locate 
it. Running repair within the recently-moved working tree will reestablish 
the connection. If multiple linked working trees are moved, 
running repair from any working tree with each tree’s new <path> as an 
argument, will reestablish the connection to all the specified paths.

If both the main working tree and linked working trees have been moved 
manually, then running repair in the main working tree and specifying the 
new <path> of each linked working tree will reestablish all connections in 
both directions.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-unlock>
unlock

Unlock a working tree, allowing it to be pruned, moved or deleted.
<https://git-scm.com/docs/git-worktree#_options>OPTIONS
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--f>-f 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---force>
--force

By default, add refuses to create a new working tree when <commit-ish> is a 
branch name and is already checked out by another working tree, or 
if <path> is already assigned to some working tree but is missing (for 
instance, if <path> was deleted manually). This option overrides these 
safeguards. To add a missing but locked working tree path, 
specify --force twice.

move refuses to move a locked working tree unless --force is specified 
twice. If the destination is already assigned to some other working tree 
but is missing (for instance, if <new-path> was deleted manually), 
then --force allows the move to proceed; use --force twice if the 
destination is locked.

remove refuses to remove an unclean working tree unless --force is used. To 
remove a locked working tree, specify --force twice.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--bltnew-branchgt>-b
 
<new-branch> 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--Bltnew-branchgt>-B
 
<new-branch>

With add, create a new branch named <new-branch> starting at <commit-ish>, 
and check out <new-branch> into the new working tree. If <commit-ish> is 
omitted, it defaults to HEAD. By default, -b refuses to create a new branch 
if it already exists. -B overrides this safeguard, 
resetting <new-branch> to <commit-ish>.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--d>-d 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---detach>
--detach

With add, detach HEAD in the new working tree. See "DETACHED HEAD" in 
git-checkout[1] <https://git-scm.com/docs/git-checkout>.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---no-checkout>
--[no-]checkout

By default, add checks out <commit-ish>, however, --no-checkout can be used 
to suppress checkout in order to make customizations, such as configuring 
sparse-checkout. See "Sparse checkout" in git-read-tree[1] 
<https://git-scm.com/docs/git-read-tree>.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---no-guess-remote>
--[no-]guess-remote

With worktree add <path>, without <commit-ish>, instead of creating a new 
branch from HEAD, if there exists a tracking branch in exactly one remote 
matching the basename of <path>, base the new branch on the remote-tracking 
branch, and mark the remote-tracking branch as "upstream" from the new 
branch.

This can also be set up as the default behaviour by using 
the worktree.guessRemote config option.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---no-track>
--[no-]track

When creating a new branch, if <commit-ish> is a branch, mark it as 
"upstream" from the new branch. This is the default if <commit-ish> is a 
remote-tracking branch. See --track in git-branch[1] 
<https://git-scm.com/docs/git-branch> for details.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---lock>
--lock

Keep the working tree locked after creation. This is the equivalent of git 
worktree lock after git worktree add, but without a race condition.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--n>-n 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---dry-run>
--dry-run

With prune, do not remove anything; just report what it would remove.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---porcelain>
--porcelain

With list, output in an easy-to-parse format for scripts. This format will 
remain stable across Git versions and regardless of user configuration. See 
below for details.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--q>-q 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---quiet>
--quiet

With add, suppress feedback messages.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt--v>-v 
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---verbose>
--verbose

With prune, report all removals.

With list, output additional information about worktrees (see below).
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---expirelttimegt>--expire
 
<time>

With prune, only expire unused working trees older than <time>.

With list, annotate missing working trees as prunable if they are older 
than <time>.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt---reasonltstringgt>--reason
 
<string>

With lock or with add --lock, an explanation why the working tree is locked.
<https://git-scm.com/docs/git-worktree#Documentation/git-worktree.txt-ltworktreegt>
<worktree>

Working trees can be identified by path, either relative or absolute.

If the last path components in the working tree’s path is unique among 
working trees, it can be used to identify a working tree. For example if 
you only have two working trees, at /abc/def/ghi and /abc/def/ggg, 
then ghi or def/ghi is enough to point to the former working tree.
<https://git-scm.com/docs/git-worktree#_refs>REFS

In multiple working trees, some refs may be shared between all working 
trees and some refs are local. One example is HEAD which is different for 
each working tree. This section is about the sharing rules and how to 
access refs of one working tree from another.

In general, all pseudo refs are per working tree and all refs starting 
with refs/ are shared. Pseudo refs are ones like HEAD which are directly 
under $GIT_DIR instead of inside $GIT_DIR/refs. There are exceptions, 
however: refs inside refs/bisect and refs/worktree are not shared.

Refs that are per working tree can still be accessed from another working 
tree via two special paths, main-worktree and worktrees. The former gives 
access to per-working tree refs of the main working tree, while the latter 
to all linked working trees.

For example, main-worktree/HEAD or main-worktree/refs/bisect/good resolve 
to the same value as the main working 
tree’s HEAD and refs/bisect/good respectively. 
Similarly, worktrees/foo/HEAD or worktrees/bar/refs/bisect/bad are the same 
as $GIT_COMMON_DIR/worktrees/foo/HEAD and 
$GIT_COMMON_DIR/worktrees/bar/refs/bisect/bad.

To access refs, it’s best not to look inside $GIT_DIR directly. Instead use 
commands such as git-rev-parse[1] <https://git-scm.com/docs/git-rev-parse>
 or git-update-ref[1] <https://git-scm.com/docs/git-update-ref> which will 
handle refs correctly.
<https://git-scm.com/docs/git-worktree#_configuration_file>CONFIGURATION 
FILE

By default, the repository config file is shared across all working trees. 
If the config variables core.bare or core.worktree are already present in 
the config file, they will be applied to the main working trees only.

In order to have configuration specific to working trees, you can turn on 
the worktreeConfig extension, e.g.:
$ git config extensions.worktreeConfig true

In this mode, specific configuration stays in the path pointed by git 
rev-parse --git-path config.worktree. You can add or update configuration 
in this file with git config --worktree. Older Git versions will refuse to 
access repositories with this extension.

Note that in this file, the exception for core.bare and core.worktree is 
gone. If they exist in $GIT_DIR/config, you must move them to 
the config.worktree of the main working tree. You may also take this 
opportunity to review and move other configuration that you do not want to 
share to all working trees:

   - 
   
   core.worktree and core.bare should never be shared
   - 
   
   core.sparseCheckout is recommended per working tree, unless you are sure 
   you always use sparse checkout for all working trees.
   
<https://git-scm.com/docs/git-worktree#_details>DETAILS

Each linked working tree has a private sub-directory in the 
repository’s $GIT_DIR/worktrees directory. The private sub-directory’s name 
is usually the base name of the linked working tree’s path, possibly 
appended with a number to make it unique. For example, 
when $GIT_DIR=/path/main/.git the command git worktree add 
/path/other/test-next next creates the linked working tree 
in /path/other/test-next and also creates 
a $GIT_DIR/worktrees/test-next directory 
(or $GIT_DIR/worktrees/test-next1 if test-next is already taken).

Within a linked working tree, $GIT_DIR is set to point to this private 
directory (e.g. /path/main/.git/worktrees/test-next in the example) 
and $GIT_COMMON_DIR is set to point back to the main working 
tree’s $GIT_DIR (e.g. /path/main/.git). These settings are made in 
a .git file located at the top directory of the linked working tree.

Path resolution via git rev-parse --git-path uses 
either $GIT_DIR or $GIT_COMMON_DIR depending on the path. For example, in 
the linked working tree git rev-parse --git-path 
HEAD returns /path/main/.git/worktrees/test-next/HEAD (not 
/path/other/test-next/.git/HEAD or /path/main/.git/HEAD) 
while git rev-parse --git-path refs/heads/master uses $GIT_COMMON_DIR and 
returns /path/main/.git/refs/heads/master, since refs are shared across all 
working trees, except refs/bisect and refs/worktree.

See gitrepository-layout[5] <https://git-scm.com/docs/gitrepository-layout> for 
more information. The rule of thumb is do not make any assumption about 
whether a path belongs to $GIT_DIR or $GIT_COMMON_DIR when you need to 
directly access something inside $GIT_DIR. Use git rev-parse --git-path to 
get the final path.

If you manually move a linked working tree, you need to update 
the gitdir file in the entry’s directory. For example, if a linked working 
tree is moved to /newpath/test-next and its .git file points 
to /path/main/.git/worktrees/test-next, then 
update /path/main/.git/worktrees/test-next/gitdir to 
reference /newpath/test-next instead. Better yet, run git worktree 
repair to reestablish the connection automatically.

To prevent a $GIT_DIR/worktrees entry from being pruned (which can be 
useful in some situations, such as when the entry’s working tree is stored 
on a portable device), use the git worktree lock command, which adds a file 
named locked to the entry’s directory. The file contains the reason in 
plain text. For example, if a linked working tree’s .git file points 
to /path/main/.git/worktrees/test-next then a file 
named /path/main/.git/worktrees/test-next/locked will prevent 
the test-next entry from being pruned. See gitrepository-layout[5] 
<https://git-scm.com/docs/gitrepository-layout> for details.

When extensions.worktreeConfig is enabled, the config 
file .git/worktrees/<id>/config.worktree is read after .git/config is.
<https://git-scm.com/docs/git-worktree#_list_output_format>LIST OUTPUT 
FORMAT

The worktree list command has two output formats. The default format shows 
the details on a single line with columns. For example:
$ git worktree list /path/to/bare-source (bare) /path/to/linked-worktree 
abcd1234 [master] /path/to/other-linked-worktree 1234abc (detached HEAD)

The command also shows annotations for each working tree, according to its 
state. These annotations are:

   - 
   
   locked, if the working tree is locked.
   - 
   
   prunable, if the working tree can be pruned via git worktree prune.
   
$ git worktree list /path/to/linked-worktree abcd1234 [master] 
/path/to/locked-worktree acbd5678 (brancha) locked 
/path/to/prunable-worktree 5678abc (detached HEAD) prunable

For these annotations, a reason might also be available and this can be 
seen using the verbose mode. The annotation is then moved to the next line 
indented followed by the additional information.
$ git worktree list --verbose /path/to/linked-worktree abcd1234 [master] 
/path/to/locked-worktree-no-reason abcd5678 (detached HEAD) locked 
/path/to/locked-worktree-with-reason 1234abcd (brancha) locked: working 
tree path is mounted on a portable device /path/to/prunable-worktree 
5678abc1 (detached HEAD) prunable: gitdir file points to non-existent 
location

Note that the annotation is moved to the next line if the additional 
information is available, otherwise it stays on the same line as the 
working tree itself.
<https://git-scm.com/docs/git-worktree#_porcelain_format>Porcelain Format

The porcelain format has a line per attribute. Attributes are listed with a 
label and value separated by a single space. Boolean attributes 
(like bare and detached) are listed as a label only, and are present only 
if the value is true. Some attributes (like locked) can be listed as a 
label only or with a value depending upon whether a reason is available. 
The first attribute of a working tree is always worktree, an empty line 
indicates the end of the record. For example:
$ git worktree list --porcelain worktree /path/to/bare-source bare worktree 
/path/to/linked-worktree HEAD abcd1234abcd1234abcd1234abcd1234abcd1234 
branch refs/heads/master worktree /path/to/other-linked-worktree HEAD 
1234abc1234abc1234abc1234abc1234abc1234a detached worktree 
/path/to/linked-worktree-locked-no-reason HEAD 
5678abc5678abc5678abc5678abc5678abc5678c branch refs/heads/locked-no-reason 
locked worktree /path/to/linked-worktree-locked-with-reason HEAD 
3456def3456def3456def3456def3456def3456b branch 
refs/heads/locked-with-reason locked reason why is locked worktree 
/path/to/linked-worktree-prunable HEAD 
1233def1234def1234def1234def1234def1234b detached prunable gitdir file 
points to non-existent location

If the lock reason contains "unusual" characters such as newline, they are 
escaped and the entire reason is quoted as explained for the configuration 
variable core.quotePath (see git-config[1] 
<https://git-scm.com/docs/git-config>). For Example:
$ git worktree list --porcelain ... locked "reason\nwhy is locked" ...
<https://git-scm.com/docs/git-worktree#_examples>EXAMPLES

You are in the middle of a refactoring session and your boss comes in and 
demands that you fix something immediately. You might typically use 
git-stash[1] <https://git-scm.com/docs/git-stash> to store your changes 
away temporarily, however, your working tree is in such a state of disarray 
(with new, moved, and removed files, and other bits and pieces strewn 
around) that you don’t want to risk disturbing any of it. Instead, you 
create a temporary linked working tree to make the emergency fix, remove it 
when done, and then resume your earlier refactoring session.
$ git worktree add -b emergency-fix ../temp master $ pushd ../temp # ... 
hack hack hack ... $ git commit -a -m 'emergency fix for boss' $ popd $ git 
worktree remove ../temp
<https://git-scm.com/docs/git-worktree#_bugs>BUGS

Multiple checkout in general is still experimental, and the support for 
submodules is incomplete. It is NOT recommended to make multiple checkouts 
of a superproject.
<https://git-scm.com/docs/git-worktree#_git>GIT

Part of the git[1] <https://git-scm.com/docs/git> suite


Bye,

  Skybuck.


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