add support to forked repository MR

[bruzos]

When I create a MR from a forked repo, this is detected by the MR job, and a error is displayed:

Cloning into '/tmp/build/get'...
fatal: Could not parse object 'b567e4cf897f2f26a4079086de0965576f7b0123'.

this commit belongs to the forked repo and it doesn't exist in the upstream repo what is been monitorized

Could it be possible to detect the project path from the metadata of the commit and execute a git clone for the forked repo??