$ git clone -n https://gitee.com/zhangwenlong01/gcc.git /var/lib/mock/dist-an23.3-build-412347-72745/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-an23.3-build-412347-72745/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin 0812c0642889fe75bd2b0d9995235a69ea17e9e0:KOJI_FETCH_HEAD
From https://gitee.com/zhangwenlong01/gcc
 * [new ref]         0812c0642889fe75bd2b0d9995235a69ea17e9e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0812c06 rebuild gcc to support -msoft-float for loongarch64