Setting up sshkey for git bash on windows 10 VM - bitbucket

Question

OS: Ubuntu with windows 10 VM
Goal: Setup git bash on the Windows 10 VM with an ssh key to use with private Bitbucket.
Overview:
Generating an SSH key into a non-default location to work with git bash did not work. An attempted solution was to create default location and move the key to that location to test. I do not know enough about how the default location is generated, or how git bash searches for the sshkey to compare with bitbucket. I suspect network drives/IT may be impacting the issue but do not know the correct questions to ask. The steps and details are below. Yes the ssh key was added to bitbucket account.
When generating the ssh key the suggestion location is /home/username/.ssh... I am not sure where this suggested path comes from. I have set several computers up with git bash/ssh keys and this suggested path varies. How does this suggested path get set? and How is the ssh key Search Path set?
ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/plane/.ssh/id_rsa): /c/Users/username/.ssh/id_rsa
~ pwd = c/Users/username
/ does exist, but home does not exist
$ ls -l /
total 3076
drwxr-xr-x 1 username 1061577 0 Feb 3 15:57 bin/
drwxr-xr-x 1 username 1061577 0 Feb 3 15:57 cmd/
drwxr-xr-x 1 username 1061577 0 Feb 3 15:57 dev/
drwxr-xr-x 1 username 1061577 0 Feb 3 15:57 etc/
-rwxr-xr-x 1 username 1061577 152112 Jan 13 20:31 git-bash.exe*
-rwxr-xr-x 1 username 1061577 151600 Jan 13 20:31 git-cmd.exe*
-rw-r--r-- 1 username 1061577 18765 Dec 10 18:25 LICENSE.txt
drwxr-xr-x 1 username 1061577 0 Feb 3 15:56 mingw64/
dr-xr-xr-x 13 username 1061577 0 Feb 3 17:57 proc/
-rw-r--r-- 1 username 1061577 160771 Jan 13 21:08 ReleaseNotes.html
drwxr-xr-x 1 username 1061577 0 Feb 3 17:02 tmp/
-rw-r--r-- 1 username 1061577 1161914 Feb 3 15:57 unins000.dat
-rwxr-xr-x 1 username 1061577 1299888 Feb 3 15:51 unins000.exe*
-rw-r--r-- 1 username 1061577 22795 Feb 3 15:57 unins000.msg
drwxr-xr-x 1 username 1061577 0 Feb 3 15:57 usr/
Permissions denied
mkdir -p /home/username
mkdir: cannot create directory ‘/home’: Permission denied
Git Clone:
$ git clone ssh://git#git.example.com/project.git
Cloning into 'project'...
Could not create directory '/home/username/.ssh'.
The authenticity of host 'example' can't be established.
RSA key fingerprint is SHA256.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/username/.ssh/known_hosts).
example: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Edit:
I have attempted the following as well.
In an effort to indicate where .ssh actually is, and where I want it to be.
/c/Users/plane/.ssh
git config --global core.sshCommand "ssh -i ~/.ssh/id_rsa.pub"
1) Could not create '/home/plane/.ssh'
2) Failed to add the host to the list of known hosts (/home/plane/.ssh/known_hosts).
3) Load key "/c/Users/plane/.ssh/id_rsa.pub": invalid format
git clone ssh://git#git.project
Cloning into 'project'...
Could not create directory '/home/plane/.ssh'.
The authenticity of host can't be established.
RSA key fingerprint is SHA256:.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/plane/.ssh/known_hosts).
Load key "/c/Users/plane/.ssh/id_rsa.pub": invalid format
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Thank you,

Answer 1

You should use:
a regular CMD (in your Windows 10 VM) with a simplified path
set PATH=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\
set GH=C:\path\to\git
set PATH=%GH%\bin;%GH%\usr\bin;%GH%\mingw64\bin;%PATH%
a key generated in the default %USERPROFILE%.ssh folder
ssh-keygen -P "" -t rsa -m PEM
register the id_rsa.pub content to your BitBucket profile
The known_hosts is still referenced at the default location /home/username/.ssh.
How do I change this default location?
This is managed by the $HOME/%HOME% environment variable.
SSH will look for known_hosts in $HOME/.ssh