Si otra persona ha subido cambios en la misma rama que tú, Git no podrá subir tus cambios:
$ git push origin main > To https://nombre de host/USERNAME/REPOSITORY.git > ! [rejected] main -> main (non-fast-forward) > error: failed to push some refs to 'https://nombre de host/USERNAME/REPOSITORY.git' > To prevent you from losing history, non-fast-forward updates were rejected > Merge the remote changes (e.g. 'git pull') before pushing again. See the > 'Note about fast-forwards' section of 'git push --help' for details. Puedes resolver este problema extrayendo y fusionando los cambios realizados en la rama remota con los cambios que has hecho localmente:
$ git fetch origin # Fetches updates made to an online repository $ git merge origin YOUR_BRANCH_NAME # Merges updates made online with your local work O bien, puedes simplemente usar git pull para ejecutar al mismo tiempo ambos comandos:
$ git pull origin YOUR_BRANCH_NAME # Grabs online updates and merges them with your local work