integration test for multiline commit message

test/integration/commitMultiline/expected/.git_keep/objects/17/6069f0ded1db43eecb3b629a6077dba6c68295

@@ -0,0 +1,2 @@
+x
<01><>A
+<EFBFBD>0@Ѯs<D1AE><73><17>L:<3A>))<29><>1<>P<EFBFBD>!")<29><><EFBFBD>#t<>y<EFBFBD>S5[˥<><CBA5><EFBFBD>*<2A>`<60><>h<7F><68>JAr <1F><><<3C>=<0B><>:<3A>⧽<EFBFBD><0E><04>qz<71>m[<5B><><EFBFBD>

test/integration/commitMultiline/expected/.git_keep/objects/57/4013716a7f007a27b647b90cdbc78d006d792b

@@ -0,0 +1,2 @@
+x
<01><>K
+<EFBFBD>0D<><44>)<29>/YVbJ)d<>c(<28>B<0C><><EFBFBD><EFBFBD><EFBFBD>7<EFBFBD>t5<74>c<1E><>뚫E<EB9AAB>.<2E><>Z<0F><>=E7%<15>Ԍ<EFBFBD><D48C>,<2C>0<>I<EFBFBD><49><EFBFBD>Q<EFBFBD><51>E<EFBFBD>j}p<18>B<>.1<EFBFBD><11><><EFBFBD>H|$<24>@B<><0F><>uދ<75>{~x=<16>ɾ><3E>k<EFBFBD>i
	<09><>:`Nz<4E><7A><EFBFBD><EFBFBD><EFBFBD>L<EFBFBD><4C><EFBFBD>]<5D><><EFBFBD><EFBFBD>9<EFBFBD><39><EFBFBD>_<EFBFBD>!?<3F>