$ git clone -n https://src.fedoraproject.org/rpms/supernovas.git /var/lib/mock/f42-build-889737-189233/root/chroot_tmpdir/scmroot/supernovas
Cloning into '/var/lib/mock/f42-build-889737-189233/root/chroot_tmpdir/scmroot/supernovas'...
$ git fetch origin 9b59a0f40c77a2b78297bf9e4d67ba2189aaffea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/supernovas
 * [new ref]         9b59a0f40c77a2b78297bf9e4d67ba2189aaffea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b59a0f Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild