$ git clone -n https://src.fedoraproject.org/rpms/libbluray.git /var/lib/mock/f40-build-2726664-73126/root/chroot_tmpdir/scmroot/libbluray
Cloning into '/var/lib/mock/f40-build-2726664-73126/root/chroot_tmpdir/scmroot/libbluray'...
$ git fetch origin 28d57be8ac7a2ad67378073066fd98d8fb14c6f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libbluray
 * [new ref]         28d57be8ac7a2ad67378073066fd98d8fb14c6f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28d57be Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild