There was a build failure issue with the latest gbs (0.24.9).
I found removing .gbs.conf will fix the issue.
Also, modifying upstream_branch's value "upstream" to
"origin/upstream" or "origin/tizen" etc will fix it, too.
I don't know which way is correct way to fix this issue.
To keep history of this file, I just rename it.
So, you can use gbs 0.24.9 to build the packages.
@tizen_fix
Change-Id: I668f5c6aa0bff1e1fc5cbd5d8600f87335e30844
+++ /dev/null
-[general]
-upstream_branch = upstream
-upstream_tag = v${upstreamversion}
--- /dev/null
+[general]
+upstream_branch = upstream
+upstream_tag = v${upstreamversion}