Cache trees with both ref and commit sha
Cache trees with both ref and commit sha

- Avoids caching URLs in a specific SHA as master and so on

ericbutters/eric-gitorious,spencerwp/mainline,feniix/gitorious,rae/gitorious-mainline,victori/gitorious-jruby,grjones/gitorious-submodule-dependencies,rae/gitorious-mainline,vymiheev/Gitorious-OpenStack,adg29/asi.gitorious,Gitorious-backup/mainline,SamuelMoraesF/Gitorious,njall/wel-gitorious,vymiheev/Gitorious-OpenStack,tigefa4u/gitorious-mainline,altrair/gitorious-openstack,ericbutters/eric-gitorious,gitorious/mainline,elcom/gitorious,grjones/gitorious-submodule-dependencies,gitorious/mainline,victori/gitorious-jruby,cynipe/gitorious,SamuelMoraesF/Gitorious,Gitorious-backup/yousource,victori/gitorious-jruby,feniix/gitorious,Gitorious-backup/yousource,deld/gitorious,altrair/gitorious-openstack,altrair/gitorious-openstack,cynipe/gitorious,spencerwp/mainline,feniix/gitorious,rae/gitorious-mainline,tigefa4u/gitorious-mainline,vymiheev/Gitorious-OpenStack,elcom/gitorious,njall/wel-gitorious,deld/gitorious,elcom/gitorious,Gitorious-backup/yousource,balcom/gitorious,deld/gitorious,Gitorious-backup/mainline,tigefa4u/gitorious-mainline,spencerwp/mainline,SamuelMoraesF/Gitorious,njall/wel-gitorious,Gitorious-backup/yousource,adg29/asi.gitorious,adg29/asi.gitorious,elcom/gitorious,ericbutters/eric-gitorious,tigefa4u/gitorious-mainline,balcom/gitorious,Gitorious-backup/mainline,spencerwp/mainline,rae/gitorious-mainline,gitorious/mainline,Gitorious-backup/mainline,grjones/gitorious-submodule-dependencies,balcom/gitorious,gitorious/mainline,SamuelMoraesF/Gitorious,adg29/asi.gitorious,cynipe/gitorious