$ git clone -n https://gitee.com/zhaohang_mskdxl/gtk3.git /var/lib/mock/dist-an23.3-build-413309-72745/root/chroot_tmpdir/scmroot/gtk3
Cloning into '/var/lib/mock/dist-an23.3-build-413309-72745/root/chroot_tmpdir/scmroot/gtk3'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/zhaohang_mskdxl/gtk3
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c033d3 update to gtk3-3.24.43-3