$ git clone -n https://src.fedoraproject.org/rpms/python-tbtrim.git /var/lib/mock/f39-build-1573894-37835/root/chroot_tmpdir/scmroot/python-tbtrim
Cloning into '/var/lib/mock/f39-build-1573894-37835/root/chroot_tmpdir/scmroot/python-tbtrim'...
$ git fetch origin 314ffb8ee3da1f191a76b0e9f2e6f0ee832cd37e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-tbtrim
 * [new ref]         314ffb8ee3da1f191a76b0e9f2e6f0ee832cd37e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 314ffb8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild