$ git clone -n https://src.fedoraproject.org/rpms/liblas.git /var/lib/mock/f40-build-2676052-67847/root/chroot_tmpdir/scmroot/liblas
Cloning into '/var/lib/mock/f40-build-2676052-67847/root/chroot_tmpdir/scmroot/liblas'...
$ git fetch origin 573d1a2e5974caf1b32afa9e7c5f05ebaeaddd49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liblas
 * [new ref]         573d1a2e5974caf1b32afa9e7c5f05ebaeaddd49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 573d1a2 Update to git f1da555