$ git clone -n https://src.fedoraproject.org/rpms/kf6-kbookmarks.git /var/lib/mock/f40-build-2222052-52699/root/chroot_tmpdir/scmroot/kf6-kbookmarks
Cloning into '/var/lib/mock/f40-build-2222052-52699/root/chroot_tmpdir/scmroot/kf6-kbookmarks'...
$ git fetch origin 3d744efe8b3d8bf010b944309af76ecf5f708304:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kbookmarks
 * [new ref]         3d744efe8b3d8bf010b944309af76ecf5f708304 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d744ef 5.248.0