$ git clone -n https://github.com/fedora-riscv/rust.git /var/lib/mock/f37-build-side-32-misc-devel-743036-26669/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-743036-26669/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 161073f916e0e82cefc7a89b940467694f61d3ce:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/rust
 * [new ref]         161073f916e0e82cefc7a89b940467694f61d3ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 161073f Merge remote-tracking branch 'fedoraproject/f37' into f37-rv64