fixes #18675

src/vs/workbench/parts/scm/electron-browser/media/diff.svg

-<?xml version="1.0" encoding="UTF-8"?>
-<svg width="13px" height="16px" viewBox="0 0 13 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-    <!-- Generator: Sketch 40.3 (33839) - http://www.bohemiancoding.com/sketch -->
-    <title>diff</title>
-    <desc>Created with Sketch.</desc>
-    <defs></defs>
-    <g id="Octicons" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g id="diff" fill="#fff">
-            <path d="M6,7 L8,7 L8,8 L6,8 L6,10 L5,10 L5,8 L3,8 L3,7 L5,7 L5,5 L6,5 L6,7 L6,7 Z M3,13 L8,13 L8,12 L3,12 L3,13 L3,13 Z M7.5,2 L11,5.5 L11,15 C11,15.55 10.55,16 10,16 L1,16 C0.45,16 0,15.55 0,15 L0,3 C0,2.45 0.45,2 1,2 L7.5,2 L7.5,2 Z M10,6 L7,3 L1,3 L1,15 L10,15 L10,6 L10,6 Z M8.5,0 L3,0 L3,1 L8,1 L12,5 L12,13 L13,13 L13,4.5 L8.5,0 L8.5,0 Z" id="Shape"></path>
-        </g>
-    </g>
-</svg>
\ No newline at end of file

src/vs/workbench/parts/scm/electron-browser/media/icon.svg

+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 448">
+<g fill="#fff">
+<path d="M376 72c0-39.703-32.313-72-72-72s-72 32.297-72 72c0 34.121 23.926 62.629 55.828 70.012-.461 26.268-13.535 50.564-35.453 65.176L208 236.766l-44.375-29.578c-21.918-14.611-34.99-38.92-35.453-65.174C160.082 134.635 184 106.123 184 72c0-39.703-32.297-72-72-72S40 32.297 40 72c0 34.254 24.09 62.879 56.186 70.123.498 36.928 18.881 71.146 49.689 91.689L192 264.555v41.381c-32 7.318-56 35.893-56 70.064 0 39.688 32.297 72 72 72s72-32.313 72-72c0-34.172-24-62.746-56-70.064v-41.381l46.125-30.742c30.793-20.529 49.191-54.744 49.689-91.689C351.902 134.879 376 106.252 376 72zM72 72c0-22.063 17.938-40 40-40s40 17.938 40 40-17.938 40-40 40-40-17.937-40-40zm176 304c0 22.063-17.938 40-40 40s-40-17.938-40-40 17.938-40 40-40 40 17.938 40 40zm56-264c-22.063 0-40-17.938-40-40s17.938-40 40-40 40 17.938 40 40-17.937 40-40 40z"/>
+</g>
+</svg>
\ No newline at end of file

src/vs/workbench/parts/scm/electron-browser/media/scmViewlet.css

@@ -4,8 +4,8 @@
  *--------------------------------------------------------------------------------------------*/
 
 .monaco-workbench > .activitybar > .content .monaco-action-bar .action-label.scm {
-	background-image: url('diff.svg');
-	background-size: 20px;
+	background-image: url('icon.svg');
+	background-size: 26px;
 	background-position: center;
 }
 

src/vs/workbench/parts/scm/electron-browser/scm.contribution.ts

@@ -67,7 +67,7 @@ if (SCMPreview.enabled) {
 		'vs/workbench/parts/scm/electron-browser/scmViewlet',
 		'SCMViewlet',
 		VIEWLET_ID,
-		localize('scm', "SCM"),
+		localize('source control', "Source Control"),
 		'scm',
 		36
 	);