$ git clone -n https://gitee.com/mgb01105731/pixman.git /var/lib/mock/dist-an23-build-136757-50400/root/chroot_tmpdir/scmroot/pixman
Cloning into '/var/lib/mock/dist-an23-build-136757-50400/root/chroot_tmpdir/scmroot/pixman'...
$ git reset --hard fb54a552aa9cc61a7e1354b18084ce4855c559e5
HEAD is now at fb54a55  optimise spec file