unable to copy a certain file
assuming the issue is caused by file size not respecting fuse-mount 4 gb file size limitation, this workaround should work
either move the file to another ext4 location which has adb permissions
adb shell mv /sdcard/TitaniumBackup/ws.clockthevault-20201130-045341.tar.gz /data/local/tmp
adb pull /data/local/tmp/ws.clockthevault-20201130-045341.tar.gz

or stream the file content over terminal stdout (linux only)
adb shell su -c &quot;cat /data/media/0/TitaniumBackup/ws.clockthevault-20201130-045341.tar.gz 2&gt; /dev/null&quot; &gt; ws.clockthevault-20201130-045341.tar.gz