$ git clone -n https://src.fedoraproject.org/rpms/rust-async-io.git /var/lib/mock/f38-build-side-42-init-devel-1395238-31050/root/chroot_tmpdir/scmroot/rust-async-io
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395238-31050/root/chroot_tmpdir/scmroot/rust-async-io'...
$ git fetch origin 5aaf9f3669f858ff9baa9a0e8e3b7fc753d1308e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-io
 * [new ref]         5aaf9f3669f858ff9baa9a0e8e3b7fc753d1308e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5aaf9f3 Update to version 1.13.0; Fixes RHBZ#2180942