How can I run Gitk on WSL 2?

I already installed Gitk in WSL 2.

After I installed Gitk, I tried to run it but it failed with below error log:

```
application-specific initialization failed: no display name and no $DISPLAY environment variable
Error in startup script: no display name and no $DISPLAY environment variable
    while executing
"load /usr/lib/x86_64-linux-gnu/libtk8.6.so Tk"
    ("package ifneeded Tk 8.6.8" script)
    invoked from within
"package require Tk"
    (file "/usr/bin/gitk" line 10)

```

Could you help me how can run Gitk on WSL 2?