$ git clone -n https://gitee.com/src-opencloudos-rpms/libtiff.git /var/lib/mock/dist-oc8-build-246099-83430/root/chroot_tmpdir/scmroot/libtiff
Cloning into '/var/lib/mock/dist-oc8-build-246099-83430/root/chroot_tmpdir/scmroot/libtiff'...
$ git fetch origin ad988452306f8992fbc7dd3a42321b7b6bfb5be6:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libtiff
 * [new ref]         ad988452306f8992fbc7dd3a42321b7b6bfb5be6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad98845 import libtiff-4.0.9-38.tl3