[patching] patch:list shows patch as installed even-though installation failed with exception

• JBoss fuse 6.2 GA with patch management from build 078
• windows server 2012 R2

  patch:add file://...build 73
  patch:add file://...build 78
  JBossFuse:karaf@root> patch:install jboss-fuse-full-6.2.1.redhat-073
  ...
  ...
  Caused by: java.io.IOException: Destination 'C:\jboss-fuse-6.2.0.redhat-133\etc'
   directory cannot be created
          at io.fabric8.patch.management.io.EOLFixingFileUtils.doCopyDirectory(EOL
  FixingFileUtils.java:105)
          at io.fabric8.patch.management.io.EOLFixingFileUtils.copyDirectory(EOLFi
  xingFileUtils.java:79)
          at io.fabric8.patch.management.impl.GitPatchManagementServiceImpl.copyMa
  nagedDirectories(GitPatchManagementServiceImpl.java:2453)
          at io.fabric8.patch.management.impl.GitPatchManagementServiceImpl.applyC
  hanges(GitPatchManagementServiceImpl.java:2576)
          at io.fabric8.patch.management.impl.GitPatchManagementServiceImpl.commit
  Installation(GitPatchManagementServiceImpl.java:961)
          ... 22 more
  Error executing command: Destination 'C:\jboss-fuse-6.2.0.redhat-133\etc' direct
  ory cannot be created
  JBossFuse:karaf@root> patch:list
  [name]                           [installed] [description]
  jboss-fuse-full-6.2.1.redhat-073 true
  jboss-fuse-full-6.2.1.redhat-078 false
  JBossFuse:karaf@root>
  

For some reason folder $FUSE_HOME/etc was marked as "read only".
I don't know how/why it was set as read only, but it's the reason of patch:install failure.

Point is - why is patch 73 marked as installed?