$ git clone -n https://github.com/fedora-riscv/rust.git /var/lib/mock/f38-build-side-42-init-devel-1068957-29784/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1068957-29784/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 6c5ce75454e3ab41ac62e47ae4fd55c8eedac0cc:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/rust
 * [new ref]         6c5ce75454e3ab41ac62e47ae4fd55c8eedac0cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c5ce75 Merge remote-tracking branch 'fedoraproject/f38' into f38-rv64 rust-1.71.1-1