$ git clone -n https://src.fedoraproject.org/rpms/djvulibre.git /var/lib/mock/f40-build-2344163-59899/root/chroot_tmpdir/scmroot/djvulibre
Cloning into '/var/lib/mock/f40-build-2344163-59899/root/chroot_tmpdir/scmroot/djvulibre'...
$ git fetch origin 31afb504c243b79792d91f0031c50c7e2c4d0c0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/djvulibre
 * [new ref]         31afb504c243b79792d91f0031c50c7e2c4d0c0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31afb50 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild