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The monotonically increasing revision ids need to be globally unique, so they should only identify commits that were committed to the upstream repo to its master or releases/gcc-N branches. The alias could print something even for private branches or vendor branches etc., but if such an identifier is then used publicly, it will refer to something else. 2020-01-16 Jakub Jelinek <jakub@redhat.com> * gcc-git-customization.sh: Verify the id to be printed is ancestor of the corresponding remote release branch (or master), otherwise print nothing.
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