Hanging at "POST git-receive-pack (chunked)"

Using SourceTree to push to BitBucket I get this error once every few months. It turns out that I just have to wait an extra five minutes and it sorts itself out. It looks like it has hanged and the temptation is to just cancel and try again but maybe hang in there a bit longer. I know that this is answered already but my commits amounted to maybe a couple of hundred kb rather than the 40mb the original poster is talking about.

Probably your credentials. Use the git+ssh protocol instead of https.

This is a bug in Git; when using HTTPS it will use chunked encoding for uploads above a certain size. Those do not work.

A trivial fix is to tell git to not chunk until some ridiculously large size value, such as:

git config http.postBuffer 524288000