$ git clone -n https://gitee.com/yangcheng1203/qt5-qtwebengine.git /var/lib/mock/dist-an23-dde-build-443243-73211/root/chroot_tmpdir/scmroot/qt5-qtwebengine
Cloning into '/var/lib/mock/dist-an23-dde-build-443243-73211/root/chroot_tmpdir/scmroot/qt5-qtwebengine'...
$ git fetch origin 42d7d685ea497a4843a4a93dded6021c1207a365:KOJI_FETCH_HEAD
From https://gitee.com/yangcheng1203/qt5-qtwebengine
 * [new ref]         42d7d685ea497a4843a4a93dded6021c1207a365 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42d7d68 Rebuild for libvpx 1.14.1