I'm looking for something similar to Pacman Rosetta, which explains how to achieve similar tasks using different source code management tools.

Sometimes docs for a certain SCM contain examples comparing that particular SCM to a couple of others. But I'm looking for a central place that contains maximum available information.

Example: one uses bzr and knows that 'bzr pull' syncs a local repo by fetching new content from a remote repo. One want to know how to do that with git. One finds the git command, he knows the keyword. Since the keyword is known, one can proceed straight to git docs, he knows what to read about, he doesn't have to waste time by searching the git docs.

I understand this might be not the only way people use to learn a new SCM tool. If you use other approaches, please do tell.