tools: quick bugfix to vgit.v, after the previous commit message, tha…

…t included a hash; TODO: a more robust check

cmd/tools/modules/vgit/vgit.v

@@ -58,7 +58,12 @@ pub fn prepare_vc_source(vcdir string, cdir string, commit string) (string, stri
 	scripting.run('git checkout --quiet master')
 	//
 	mut vccommit := ''
-	vcbefore_subject_match := scripting.run('git rev-list HEAD -n1 --timestamp --grep=${v_commithash[0..7]} ')
+	mut partial_hash := v_commithash[0..7]
+	if '5b7a1e8'.starts_with(partial_hash) {
+		// we need the following, otherwise --grep= below would find a93ef6e, which does include 5b7a1e8 in the commit message ... 🤦‍♂️
+		partial_hash = '5b7a1e84a4d283071d12cb86dc17aeda9b5306a8'
+	}
+	vcbefore_subject_match := scripting.run('git rev-list HEAD -n1 --timestamp --grep=${partial_hash} ')
 	scripting.verbose_trace(@FN, 'vcbefore_subject_match: ${vcbefore_subject_match}')
 	if vcbefore_subject_match.len > 3 {
 		_, vccommit = line_to_timestamp_and_commit(vcbefore_subject_match)