$ git clone -n https://gitee.com/src-anolis-os/gnome-backgrounds.git /var/lib/mock/dist-an7-build-62449-34375/root/chroot_tmpdir/scmroot/gnome-backgrounds
Cloning into '/var/lib/mock/dist-an7-build-62449-34375/root/chroot_tmpdir/scmroot/gnome-backgrounds'...
$ git reset --hard origin/a7
HEAD is now at 05984cd import gnome-backgrounds-3.28.0-1.el7.src.rpm