This is the correct format for "origin" config:

[remote "origin"]
url = https://github.com/porcelli/NewSampleGH.git
fetch = +refs/heads/:refs/remotes/origin/

But this is how we get when Importing:

[remote "origin"]
url = https://github.com/porcelli/SampleTest.git
fetch = +refs/:refs/
mirror = true

Notice that we need remove the mirror and change the fetch to have the correct format.