$ git clone -n https://src.fedoraproject.org/rpms/rust-async-compat.git /var/lib/mock/f45-build-40267-770/root/chroot_tmpdir/scmroot/rust-async-compat
Cloning into '/var/lib/mock/f45-build-40267-770/root/chroot_tmpdir/scmroot/rust-async-compat'...
$ git fetch origin f86a6c9d3b38e72ce9964f37ff77200218e5f06e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-compat
 * [new ref]         f86a6c9d3b38e72ce9964f37ff77200218e5f06e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f86a6c9 Revert "Update to 0.2.6"