我通过使用ssh://基于URL而不是基于http://的URL解决了这个问题。

几天前，我使用基于http://的URL克隆了存储库。在克隆和推送之间，我不得不在我的帐户上启用2FA，随后将我的公钥添加到代码库中。

由于启用了2FA, http:// URL无法正常工作。

在使用git很长一段时间没有问题之后，我今天遇到了这个问题。经过一些思考，我意识到我今天早些时候把我的面具从022换成了别的东西。

其他人的所有答案都是有帮助的，例如，对有问题的目录执行chmod。但根本原因是我的新umask，每当在.git/object/下创建一个新目录时，它总是会导致一个新问题。所以，对我来说，长期的解决方案是把umask改回022。

修复权限

在你确定并修复了潜在的原因(见下文)后，你会想要修复权限:

cd /path/to/repo/.git
sudo chgrp -R groupname .
sudo chmod -R g+rwX .
sudo find . -type d -exec chmod g+s '{}' +

注意，如果你想让每个人都能修改存储库，你不需要chgrp，你需要将chmod更改为sudo chmod -R a+rwX。

如果您不修复根本原因，错误将不断出现，您将不得不一遍又一遍地重新运行上述命令。

根本原因

该错误可能是由以下原因之一引起的:

The repository isn't configured to be a shared repository (see core.sharedRepository in git help config). If the output of: git config core.sharedRepository is not group or true or 1 or some mask, try running: git config core.sharedRepository group and then re-run the recursive chmod and chgrp (see "Repair Permissions" above). The operating system doesn't interpret a setgid bit on directories as "all new files and subdirectories should inherit the group owner". When core.sharedRepository is true or group, Git relies on a feature of GNU operating systems (e.g., every Linux distribution) to ensure that newly created subdirectories are owned by the correct group (the group that all of the repository's users are in). This feature is documented in the GNU coreutils documentation: ... [If] a directory's set-group-ID bit is set, newly created subfiles inherit the same group as the directory, and newly created subdirectories inherit the set-group-ID bit of the parent directory. ... [This mechanism lets] users share files more easily, by lessening the need to use chmod or chown to share new files. However, not all operating systems have this feature (NetBSD is one example). For those operating systems, you should make sure that all of your Git users have the same default group. Alternatively, you can make the repository world-writable by running git config core.sharedRepository world (but be careful—this is less secure). The file system doesn't support the setgid bit (e.g., FAT). ext2, ext3, ext4 all support the setgid bit. As far as I know, the file systems that don't support the setgid bit also don't support the concept of group ownership so all files and directories will be owned by the same group anyway (which group is a mount option). In this case, make sure all Git users are in the group that owns all the files in the file system. Not all of the Git users are in the same group that owns the repository directories. Make sure the group owner on the directories is correct and that all users are in that group.

您需要在您的终端上复制并粘贴此命令:-

sudo chmod 777 -R .git/objects

调试这种情况的一个好方法是，下次发生这种情况时，SSH到远程repo, cd到objects文件夹，并执行ls -al。

如果您看到2-3个文件具有不同的用户:组所有权，那么这就是问题所在。

在过去，我遇到过一些遗留脚本访问我们的git repo，通常意味着不同的(unix)用户最后推送/修改文件，而您的用户没有权限覆盖这些文件。你应该创建一个共享git组，所有启用git的用户都在其中，然后递归地chgrp objects文件夹和它的内容，这样它的组所有权就是共享git组。

您还应该在文件夹上添加一个sticky位，以便在文件夹中创建的所有文件将始终具有git组。

Chmod g+s目录名

更新:我不知道core. sharerepository。很高兴知道这一点，尽管它可能只是做上述工作。

我遇到这个问题太多次了，但每次发生时，我都尝试使用sudo命令推送或提交，在输入密码后，我不使用sudo推送或提交 例如

sudo git commit -m "message"

然后再输入密码

git commit -m "message"