It's used at build time in 12 crates.

Depender (with downloads and own rev deps) vergen-git2 version
12K wallust build ^1.0
1.5K rsonpath build ^1.0.1
420 rainfrog build ^1.0.0
340 gerust build ^1.0.2
290 dioxionary build ^1.0.5
140 termscp build ^1
100 hyrced build ^1.0
openapi-tui build ^1.0.0
av1an build ^1.0.0
arcam build ^1.0.0
cres build ^1.0
fibertools-rs build ^1.0.2