Git (TortoiseGit) - How to revert a single file to a previous revision and then undo the revert?

Question

When using Git with TortoiseGit: Does somebody know how to revert a single file(or a complete repository) to a previous revision?

For example I have a repository con

Answer 1

It is also possible to get a specific file:

• Right-click on the file
• Choose the menu item: Git Show Log

TortoiseGit show a dialog with a list of all revisions

• Click on the prior revision (2)

In a list in the bottom of the dialog it shows all the files associated with the commit

• Find the file you are looking to view
• Right-click on that file and Save Revision To
• This will save that previous revision of the file with the commit number concatenated on the file

For example: - original file is file.txt - revision 2 will save as file-67b51a8.txt

I'm using TortoiseGit v2.2.0.0