Seems SourceTree requires gpg2 exist but brewed gpg won't install it

[Carter Li]

Install gpg with `brew install gpg` and configure git to use it.

Then SourceTree keeps bothering

error: gpg failed to sign the data

fatal: failed to write commit object

While `git commit` in terminal doesn't

I have set the GPG program path `/usr/local/Cellar/gnupg/2.1.23/bin`

If I `ln -s gpg gpg2`, the problem solves

[Tomáš Slíž]

I don't want to use GPG Tools or something like that. So thank you for this hint, it saved my day ;-)