On Python 3, we can only decode byte sequences.
subprocess.Popen(universal_newlines=True) always returns unicode stdout/sderr.
Fixes https://pagure.io/fedora-infrastructure/issue/9366
Signed-off-by: Miro Hrončok <miro@hroncok.cz>
The issue was triggered when multiple commits were pushed at once at
which point the list of revisions contained a list of OID objects
that are not JSON serializable but can be converted to text via
str() or by accessing their .hex attribute.
However, when a single commit is pushed, the list of revisions
contains just the hash of the commit pushed and thus is already
a string. So relying on .hex will not work then.
Using str() becomes the solution that works for both scenarios.
Fixes https://pagure.io/fedora-infrastructure/issue/9247
Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>
