🐛 Fix trace in commit. (#81)

closes #74 

An alternative would be for Head() to return the last line in the
output.
Thoughts?

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Bug Fixes**
- Suppressed Git trace output during operations to prevent unexpected
verbose logging in normal use.
- Maintains non-interactive behavior for Git commands, avoiding prompt
interruptions.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Signed-off-by: Jeff Ortel <[email protected]>

Author: jortel

repository/git.go

@@ -152,8 +152,6 @@ func (r *Git) git() (cmd *command.Command) {
 	cmd.Env = append(
 		os.Environ(),
 		"GIT_TERMINAL_PROMPT=0",
-		"GIT_TRACE_SETUP=1",
-		"GIT_TRACE=1",
 		"HOME="+r.home())
 	return
 }