Button label during check for update is confusing

When I opened the SourceTree software there were a message saying there were a new version, I confirmed to install it.

Then I entered the menu "Options->Check for updates"

There were nothing indicating there were a process already on going, not a loader, nothing. Since my internet connection was slow, I clicked to check for updates again and it promped a message, as you can see in this image.

The button "Cancel" seems to be confusing in this context. Will it cancel the ongoing progress? Will it just close the prompt dialog?

Maybe changing it to "Ok" or "Close" will make more sense, unless the button actually cancel the progress, but then, maybe add a message "Would you like to cancel the on going progress?"

I'm sure the FrontEnd guys will know hwo to handle this.