$ git clone -n https://gitee.com/src-opencloudos-rpms/gtk3.git /var/lib/mock/dist-oc9-build-206887-80573/root/chroot_tmpdir/scmroot/gtk3
Cloning into '/var/lib/mock/dist-oc9-build-206887-80573/root/chroot_tmpdir/scmroot/gtk3'...
$ git fetch origin b63e508dddccd490b7e2a50f982daf8aa959de75:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gtk3
 * [new ref]         b63e508dddccd490b7e2a50f982daf8aa959de75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b63e508 import gtk3-3.24.38-8.tl4