Git: Commit ID
One important concept is Commit ID. Every commit has a ID.
Commit ID is a 40 digits hexadecimal, for example: 3b6ea398cc2d69212b04c29f06b8d15c0af34e34
.
List Commit ID
git log -3
- show the last 3 commit id.
Note, in git commands that requires a commit id, you can usually use
HEAD
.
It usually means the commit id of last commit.
〔see Git: What's HEAD〕