$ git clone -n https://gitee.com/xht8015/gtk2.git /var/lib/mock/dist-an23-build-480028-74220/root/chroot_tmpdir/scmroot/gtk2
Cloning into '/var/lib/mock/dist-an23-build-480028-74220/root/chroot_tmpdir/scmroot/gtk2'...
$ git fetch origin 905dd751ccc01b24237c2e00831f24a3a4b7be1a:KOJI_FETCH_HEAD
From https://gitee.com/xht8015/gtk2
 * [new ref]         905dd751ccc01b24237c2e00831f24a3a4b7be1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 905dd75 Add support for riscv64