Is there a git plugin for the Delphi IDE?
You can use TortoiseGit from inside Delphi IDE 2007 and above with the File Browser Feature, TortoiseGit integrate into Windows Explorer, so you will access it's command from File Browse Inside the IDE.
if you have older version than 2007, you can use IBrowser which provide more featuers than File Browser beside support older Delphi versions.
I do the same but with TortoiseSVN