我使用两台计算机的git工作，无法推动两者的提交

I have two computers at home, one with Windows and one with Linux and I have one big repository called Work that I put on Git. But I work with this remote from both computers. I have created the repository initially on one and create the git repository (on bitbucket) from there. And I was able to make commit, push or pull. But I also make modifications from my second computer after I clone and git init the Work repository (but I do not make modifications on the same files), and when I tried to push it makes an error I have two computers at home, one with Windows