$ git clone -n https://src.fedoraproject.org/rpms/xournal.git /var/lib/mock/f40-build-2648463-66780/root/chroot_tmpdir/scmroot/xournal
Cloning into '/var/lib/mock/f40-build-2648463-66780/root/chroot_tmpdir/scmroot/xournal'...
$ git fetch origin 17eca32f2c8c14d6a157e3d81331a4c1af2ce69f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xournal
 * [new ref]         17eca32f2c8c14d6a157e3d81331a4c1af2ce69f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17eca32 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild