title: How to configure yocto to use the latest git commit?
body: <p>I am a very lazy person. While working on a HW/SW project the software changes permanently. In this development stage, changing the commit/reversion-tags in the recipes is very nasty.
  I want Yocto to fetch the latest git commit. Is this possible/How to do this?
  My example recipe:</p>
  
  <pre><code>SUMMARY = "my test"
  SECTION = "test"
  LICENSE = "CLOSED"
  
  inherit cmake
  SRCREV = "f9bdbd6c631f07e427c010086c7c26a95eb2924e"
  
  SRC_URI = "gitsm://myGit/mytest;protocol=http;branch=develop"
  
  S = "${WORKDIR}/git/"
  </code></pre>