SourceTree Git Clone Error

Hi,
One of my developers has encountering an issue while trying to clone our repository.

This is the error
git -c diff.mnemonicprefix=false -c core.quotepath=false clone --recursive https://AjayBihariVerma@bitbucket.org/mouchel/taranto.git D:\TSL_BitBucket
Cloning into 'D:\TSL_BitBucket'...

fatal: early EOF

fatal: The remote end hung up unexpectedly
fatal: index-pack failed

error: RPC failed; result=18, HTTP code = 200

Completed with errors, see above.

Some other times, the clone just hangs there without actually progressing, for hours and hours.
We have tried this multiple times.

We have followed the steps in
https://confluence.atlassian.com/pages/viewpage.action?pageId=301663284\\
and I have attached the log file from the console.

It reached 13% and just hanged there.

Please let us if you can help.