$ git clone -n https://src.fedoraproject.org/rpms/python-ipykernel.git /var/lib/mock/f40-build-2595834-62746/root/chroot_tmpdir/scmroot/python-ipykernel
Cloning into '/var/lib/mock/f40-build-2595834-62746/root/chroot_tmpdir/scmroot/python-ipykernel'...
$ git fetch origin 839bf3bf4a5e82f9ab17d75050117d52e309bf8f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ipykernel
 * [new ref]         839bf3bf4a5e82f9ab17d75050117d52e309bf8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 839bf3b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild