git push fails but works fine with "git push"

**Describe the bug**
I was trying to push and it fails says it can't find the URL to the git server. If I just go to my terminal and do a "git push" it works fine.

**To Reproduce**
Steps to reproduce the behavior:
1. My git server is working through a vpn so I imagine you would need to first set up a vpn to test gitui is able to push normally.
2. open gitui and do a git push
3. See error

**Expected behavior**
It should use the same functionality as a normal "git push" to avoid having to set things up in another way.

**Context (please complete the following information):**
- Latest gitui from Arch repos version 0.25.1

Comienza reproduciendo el fallo con gitui 0.25.1 mientras el servidor Git sea accesible a través de una VPN y, después, compáralo con un `git push` exitoso en la terminal. Investiga por qué gitui no puede encontrar la URL del servidor; se considera completado cuando hacer push mediante gitui funciona usando la misma configuración que el comando normal de Git.

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