[mythtv] Github tarball from commit can change

Craig Treleaven ctreleaven at cogeco.ca
Mon Sep 28 12:17:52 UTC 2015

For my MacPorts packaging of Myth, I use the GitHub feature to create a tarball of the source as of a particular commit.  Work great…most of the time.  But not all the time and not as of yesterday.

For example, I updated Myth on September 17 to pull from the fixes-27 branch as of September 9 (commit e9b577d3) and recorded the checksums for the archive at that time.  Yesterday, a user went to build and got different checksums which, of course, caused the build to fail.

Comparing the contents of the archive from September 17 to now, the only difference is:

$ diff -ur prev new
diff -ur prev/MythTV-mythtv-e9b577d/mythtv/EXPORTED_VERSION new/MythTV-mythtv-e9b577d/mythtv/EXPORTED_VERSION
--- prev/MythTV-mythtv-e9b577d/mythtv/EXPORTED_VERSION	2015-09-09 13:14:00.000000000 -0400
+++ new/MythTV-mythtv-e9b577d/mythtv/EXPORTED_VERSION	2015-09-09 13:14:00.000000000 -0400
@@ -1,2 +1,2 @@
-BRANCH=" (fixes/0.27)"

I don’t know much about git or GitHub.  Can someone explain why that line changed and how to prevent this problem in the future.


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