You can see what “hunks” of work would be staged for commit using the patch flag:

git add -p

or

git add --patch

This opens an interactive prompt that allows you to look at the diffs and let you decide whether you want to include them or not.

Stage this hunk [y,n,q,a,d,/,s,e,?]?

• y stage this hunk for the next commit
• n do not stage this hunk for the next commit
• q quit; do not stage this hunk or any of the remaining hunks
• a stage this hunk and all later hunks in the file
• d do not stage this hunk or any of the later hunks in the file
• g select a hunk to go to
• / search for a hunk matching the given regex
• j leave this hunk undecided, see next undecided hunk
• J leave this hunk undecided, see next hunk
• k leave this hunk undecided, see previous undecided hunk
• K leave this hunk undecided, see previous hunk
• s split the current hunk into smaller hunks
• e manually edit the current hunk
• ? print hunk help