$ git clone -n https://src.fedoraproject.org/rpms/python-nbformat.git /var/lib/mock/f39-build-1956162-43252/root/chroot_tmpdir/scmroot/python-nbformat
Cloning into '/var/lib/mock/f39-build-1956162-43252/root/chroot_tmpdir/scmroot/python-nbformat'...
$ git fetch origin 65f161a311ba82c07254260f7d320bfb52c9a55b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nbformat
 * [new ref]         65f161a311ba82c07254260f7d320bfb52c9a55b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65f161a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild