$ git clone -n http://fedora.riscv.rocks:3000/rpms/gcc.git /var/lib/mock/f40-build-775856-128469/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/f40-build-775856-128469/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin 73d3eb480167c53f4a11561022313a12dec41163:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/gcc
 * [new ref]         73d3eb480167c53f4a11561022313a12dec41163 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73d3eb4 riscv: lib{asan,lsan,tsan,ubsan} enabled, ifunc, intrinsics headers