allow diff to only take one sha
allow diff to only take one sha

WOODDREAM/try,enosje/Teste,user45/grit,wenwj/111,VasiliyGryaznoy/test,wwjun110/grit,mtinet/grit,shark12345/abc,wwjun110/grit,wykeham/tr2,duanjun/test,jegj/Grit,schacon/grit,abicky/grit,Arjunduggal88/first,gitcafe-dev/grit,JessRudder/grit,wwjun110/grit,jvirguezss/SS-DEVSS,github/grit,RyantChan/testweb,nickle-ye/my_grit,pravinvanmore/restserver,moodmass/grit,redronin/grit,mojombo/grit,suoqiangqiang/demofirst,thommay/grit,shark12345/mygit,jinmm1992/hope,WOODDREAM/try,wuligit/test1,qijianbo/hub,patientslikeme/grit,flycutter/grit,KimGeoNam/geonam,rgroux/grit,KimGeoNam/geonam,adamlerer/grit,wykeham/tr2,Max1mov/grit,flycutter/grit,shark12345/mygit,xiaodie/example,yqb95/mygrit,mtinet/grit,JoeMburu/mygrits,isabanin/grit,brynary/grit,kevinsawicki/grit,Max1mov/grit,saulide/testGit,enosje/Teste,lyk4411/test,wenwj/111,kevinsawicki/grit,andreystadnik/testrepo,AkiraHash/grit,sburenko86/grit,rmendez1972/grit,brynary/grit,wlacawy/test,ManojkumarMenon/grit,feistar/RepoLearning,lyk4411/test,Smvel/test,qijianbo/hub,jecotany/test,rmendez1972/grit,rgroux/grit,HrishikeshSingh/testmodulerepo,saulide/testGit,izcms/testgit,gitlabhq/grit,WOODDREAM/try,gitcafe-dev/grit,VasiliyGryaznoy/test,guagualvcha/ticgit,HrishikeshSingh/testmodulerepo,izcms/testgit,eciuca/first-repo,shaomengchao/pb,riyad/grit,lucianmanciu/MyGrit,Philipp1899/test_project,jecotany/test,gitlabhq/grit,sebastian-schulze/grit,ckw1375/test,isabanin/grit,thommay/grit,shark12345/abc,renatoramiro/grit,suoqiangqiang/demofirst,bpug/test,Smvel/test,METROSTATE/mygrit