In the libyuv DEPS file, we have

vars = {
   ...
  'lss_revision': 'e6527b0cd469e3ff5764785dadcb39bf7d787154',
  # Three lines of non-changing comments so that
  # the commit queue can handle CLs rolling catapult
  # and whatever else without interference from each other.
  'catapult_revision': 'aa736cc76ee5e35215abcfb83a8c354f12d0c684',
}
...
deps_os = {
  'android': {
    ...
    'src/third_party/lss':
      Var('chromium_git') + '/linux-syscall-support.git' + '@' + Var('lss_revision'),
  ...
  },
  'unix': {
    'src/third_party/lss':
      Var('chromium_git') + '/linux-syscall-support.git' + '@' + Var('lss_revision'),
  },
  ...
}

Running roll-dep-svn --no-verify-revision src/third_party/lss e6527b0cd469e3ff5764785dadcb39bf7d787154

produces the following change:

'lss_revision': 
 'e6527b0cd469e3ff5764785dadcb39bf7d787154'e6527b0cd469e3ff5764785dadcb39bf7d787154785dadcb39bf7d787154',

which is obviously incorrect, it should be just 'e6527b0cd469e3ff5764785dadcb39bf7d787154'.