$ git clone -n https://src.fedoraproject.org/rpms/python-oslo-serialization.git /var/lib/mock/f39-build-1581048-38079/root/chroot_tmpdir/scmroot/python-oslo-serialization
Cloning into '/var/lib/mock/f39-build-1581048-38079/root/chroot_tmpdir/scmroot/python-oslo-serialization'...
$ git fetch origin 15dacdd4ee81eb12325a072cc4e5926eddf53ef5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-oslo-serialization
 * [new ref]         15dacdd4ee81eb12325a072cc4e5926eddf53ef5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15dacdd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild