Not much: > the currently checked-out revision and a flag indicating whether edited or untracked files are present Basically, it's including a git commit ID,

Not much: > the currently checked-out revision and a flag indicating whether edited or untracked files are present Basically, it's including a git commit ID, which is a hash, and flags that indicate if there are local changes. It's pretty common to include build hashes in shipping code, logs, ect.