$ git clone -n https://src.fedoraproject.org/rpms/python-rfc3339-validator.git /var/lib/mock/f39-build-1620935-38704/root/chroot_tmpdir/scmroot/python-rfc3339-validator
Cloning into '/var/lib/mock/f39-build-1620935-38704/root/chroot_tmpdir/scmroot/python-rfc3339-validator'...
$ git fetch origin 3bf003c76a9a0a3615c521f32619c7d48a1fca79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-rfc3339-validator
 * [new ref]         3bf003c76a9a0a3615c521f32619c7d48a1fca79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bf003c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild