$ git clone -n https://src.fedoraproject.org/rpms/rust-stats_alloc.git /var/lib/mock/f38-build-side-43-rust-devel-1419034-31459/root/chroot_tmpdir/scmroot/rust-stats_alloc
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1419034-31459/root/chroot_tmpdir/scmroot/rust-stats_alloc'...
$ git fetch origin 9a6f1997162d55f5469bef020d5279f03bd0ec67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-stats_alloc
 * [new ref]         9a6f1997162d55f5469bef020d5279f03bd0ec67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a6f199 Initial Fedora package