Add --only-commit flag to stellar version

FULL_HELP_DOCS.md

@@ -4502,6 +4502,7 @@ Print version information
 
 - `--only-version` — Print only the version
 - `--only-version-major` — Print only the major version
+- `--only-commit` — Print only the commit sha
 
 ## `stellar plugin`
 

cmd/soroban-cli/src/commands/version.rs

@@ -5,11 +5,14 @@ use std::fmt::Debug;
 #[group(skip)]
 pub struct Cmd {
     /// Print only the version.
-    #[arg(long)]
+    #[arg(long, group = "only")]
     only_version: bool,
     /// Print only the major version.
-    #[arg(long)]
+    #[arg(long, group = "only")]
     only_version_major: bool,
+    /// Print only the commit sha.
+    #[arg(long, group = "only")]
+    only_commit: bool,
 }
 
 impl Cmd {
@@ -19,6 +22,8 @@ impl Cmd {
             println!("{}", pkg());
         } else if self.only_version_major {
             println!("{}", major());
+        } else if self.only_commit {
+            println!("{}", git());
         } else {
             println!("stellar {}", long());
         }