$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_ls.git /var/lib/mock/f42-build-side-1-3581475-46829/root/chroot_tmpdir/scmroot/rust-uu_ls
Cloning into '/var/lib/mock/f42-build-side-1-3581475-46829/root/chroot_tmpdir/scmroot/rust-uu_ls'...
$ git fetch origin 0a50d767fb5037331c78b30aec808d389748ec30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_ls
 * [new ref]         0a50d767fb5037331c78b30aec808d389748ec30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a50d76 Update lscolors to 0.20.0