$ git clone -n https://gitee.com/zhonglingh/llvm14.git /var/lib/mock/dist-an23-epao-build-347627-70368/root/chroot_tmpdir/scmroot/llvm14
Cloning into '/var/lib/mock/dist-an23-epao-build-347627-70368/root/chroot_tmpdir/scmroot/llvm14'...
$ git fetch origin 7254464b957899de1d5738678b0dfbe7c261a4fa:KOJI_FETCH_HEAD
From https://gitee.com/zhonglingh/llvm14
 * [new ref]         7254464b957899de1d5738678b0dfbe7c261a4fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7254464 init from upstream