After installing private Github repo as dependency via yarn with fine-grained access tokens, GCM encounters 403 errors

AppPath: /usr/local/bin/git-credential-manager
InstallDir: /usr/local/share/gcm-core/
Version: 2.3.2

Diagnostic: Environment
Skipped: False
Success: True
Exception: None
Log:
OSType: Linux
OSVersion: Ubuntu 23.04
Reading environment variables... OK
Variables:
KONSOLE_DBUS_SERVICE=:1.44
KDE_APPLICATIONS_AS_SCOPE=1
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session1
KDE_SESSION_UID=1000
LESS=-R
SHELL_SESSION_ID=6eb2289323fb495a8571193aec5f25ed
HOME=/home/me
KONSOLE_DBUS_SESSION=/Sessions/1
OLDPWD=/home/me/Documents/MyProject
LOGNAME=me
USER=me
LSCOLORS=Gxfxcxdxbxegedabagacad
QTWEBENGINE_DICTIONARIES_PATH=/usr/share/hunspell-bdic/
XDG_SESSION_DESKTOP=KDE
COLORTERM=truecolor
PAM_KWALLET5_LOGIN=/run/user/1000/kwallet5.socket
ANDROID_SDK=/home/me/Android/Sdk/
XCURSOR_THEME=Breeze_Snow
KDE_SESSION_VERSION=5
DESKTOP_SESSION=plasma
GTK_RC_FILES=/etc/gtk/gtkrc:/home/me/.gtkrc:/home/me/.config/gtkrc
XDG_DATA_DIRS=/usr/share/plasma:/home/me/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share
XDG_SESSION_TYPE=x11
XDG_SESSION_ID=3
XAUTHORITY=/home/me/.Xauthority
XDG_VTNR=1
XCURSOR_SIZE=24
ANDROID_HOME=/home/me/Android/Sdk/
REACT_EDITOR=subl
PAGER=less
KDE_FULL_SESSION=true
TERM=xterm-256color
EXPO_USE_EXOTIC=1
GTK_USE_PORTAL=0
PATH=/usr/lib/git-core:/home/me/.nvm/versions/node/v18.16.0/bin:/home/me/Android/Sdk/:/home/me/Android/Sdk//platform-tools/:/home/me/.local/bin:/home/me/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
NVM_BIN=/home/me/.nvm/versions/node/v18.16.0/bin
NVM_DIR=/home/me/.nvm
SSH_AUTH_SOCK=/tmp/ssh-XXXXXXG7mf7u/agent.1229
PWD=/home/me/Documents/MyProject
GIT_TRACE2_PARENT_SID=5bc64cee-c416-44e9-8583-1cf845f2f2c8
NVM_INC=/home/me/.nvm/versions/node/v18.16.0/include/node
XDG_CURRENT_DESKTOP=KDE
ANDROID_SDK_ROOT=/home/me/Android/Sdk/
SESSION_MANAGER=local/ubuntu:@/tmp/.ICE-unix/1491,unix/ubuntu:/tmp/.ICE-unix/1491
QT_SCREEN_SCALE_FACTORS=Virtual1=1;Virtual2=1;Virtual3=1;Virtual4=1;Virtual5=1;Virtual6=1;Virtual7=1;Virtual8=1;
_=/usr/bin/git
WINDOWID=65011725
COLORFGBG=15;0
SHELL=/usr/bin/zsh
KONSOLE_VERSION=221203
PROFILEHOME=
NVM_CD_FLAGS=-q
IM_CONFIG_PHASE=1
DISPLAY=:0
GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/me/.gtkrc-2.0:/home/me/.config/gtkrc-2.0
QT_AUTO_SCREEN_SCALE_FACTOR=0
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
LANGUAGE=
XDG_SESSION_CLASS=user
SYSTEMD_EXEC_PID=1189
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
SHLVL=1
GIT_EXEC_PATH=/usr/lib/git-core
XDG_SEAT=seat0
XDG_RUNTIME_DIR=/run/user/1000
SSH_AGENT_PID=1345
XDG_CONFIG_DIRS=/home/me/.config/kdedefaults:/etc/xdg/xdg-plasma:/etc/xdg:/usr/share/kubuntu-default-settings/kf5-settings
ZSH=/home/me/.oh-my-zsh
MyProject_PORT=2324
LANG=en_US.UTF-8
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=00:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.avif=01;35:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.webp=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:~=00;90:#=00;90:.bak=00;90:.old=00;90:.orig=00;90:.part=00;90:.rej=00;90:.swp=00;90:.tmp=00;90:.dpkg-dist=00;90:.dpkg-old=00;90:.ucf-dist=00;90:.ucf-new=00;90:.ucf-old=00;90:.rpmnew=00;90:.rpmorig=00;90:.rpmsave=00;90:
QT_ACCESSIBILITY=1

Diagnostic: File system
Skipped: False
Success: True
Exception: None
Log:
Temporary directory is '/tmp/'...
Checking basic file I/O...
Writing to temporary file '/tmp/9fad43898339a37740d821ac'... OK
Reading from temporary file '/tmp/9fad43898339a37740d821ac'... OK
Deleting temporary file '/tmp/9fad43898339a37740d821ac'... OK
Testing IFileSystem instance...
UserHomePath: /home/me
UserDataDirectoryPath: /home/me/.gcm
GetCurrentDirectory(): /home/me/Documents/MyProject

Diagnostic: Networking
Skipped: False
Success: True
Exception: None
Log:
Checking networking and HTTP stack...
Creating HTTP client... OK
IsNetworkAvailable: True
Sending HEAD request to http://example.com...Sending HEAD request to https://example.com... OK
OK
Acquiring free TCP port... OK
Testing local HTTP loopback connections...
Creating new HTTP listener for http://localhost:43417/... OK
Waiting for loopback connection... OK
Writing response... OK
Waiting for response data... OK
Loopback connection data OK

Diagnostic: Git
Skipped: False
Success: True
Exception: None
Log:
Getting Git version... OK
Git version is '2.39.2'
Locating current repository... OK
Git repository at '/home/me/Documents/MyProject/.git'
Listing all Git configuration... OK
Git configuration:
file:/home/me/.gitconfig user.email=me.myself@gmail.com
file:/home/me/.gitconfig user.name=me
file:/home/me/.gitconfig credential.credentialstore=secretservice
file:/home/me/.gitconfig credential.helper=/usr/local/bin/git-credential-manager
file:.git/config core.repositoryformatversion=0
file:.git/config core.filemode=true
file:.git/config core.bare=false
file:.git/config core.logallrefupdates=true
file:.git/config core.hookspath=.husky
file:.git/config remote.origin.url=https://github.com/Me/MyProject.git
file:.git/config remote.origin.fetch=+refs/heads/:refs/remotes/origin/
file:.git/config branch.master.remote=origin
file:.git/config branch.master.merge=refs/heads/master

Diagnostic: Credential storage
Skipped: False
Success: True
Exception: None
Log:
ICredentialStore instance is of type: CredentialStore
Writing test credential... OK
Reading test credential... OK
Deleting test credential... OK

Diagnostic: Microsoft authentication (AAD/MSA)
Skipped: False
Success: True
Exception: None
Log:
Broker is not enabled.
Flow type is: Auto
Gathering MSAL token cache data... OK
CacheDirectory: /home/me/.local/.IdentityService
CacheFileName: msal.cache
CacheFilePath: /home/me/.local/.IdentityService/msal.cache
KeyringCollection:
KeyringSchemaName:
KeyringSecretLabel:
KeyringAttribute1: (,)
KeyringAttribute2: (,)
Creating cache helper... OK
Verifying MSAL token cache persistence... OK

Diagnostic: GitHub API
Skipped: False
Success: True
Exception: None
Log:
Using 'https://github.com/' as API target.
Querying '/meta' endpoint... OK