$ git clone -n https://gitee.com/fundawang/llvm15.git /var/lib/mock/dist-an23-build-234870-62733/root/chroot_tmpdir/scmroot/llvm15
Cloning into '/var/lib/mock/dist-an23-build-234870-62733/root/chroot_tmpdir/scmroot/llvm15'...
$ git reset --hard 90032a1bcb81b2003b4c2665d12499494694a906
HEAD is now at 90032a1 Branch llvm to llvm15 for upgrades