$ git clone -n https://src.fedoraproject.org/rpms/aws-c-io.git /var/lib/mock/f42-build-side-1-3505985-45995/root/chroot_tmpdir/scmroot/aws-c-io
Cloning into '/var/lib/mock/f42-build-side-1-3505985-45995/root/chroot_tmpdir/scmroot/aws-c-io'...
$ git fetch origin c52a0a0a40e141f4bc8f1abf14c23a27adfac606:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aws-c-io
 * [new ref]         c52a0a0a40e141f4bc8f1abf14c23a27adfac606 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c52a0a0 fix: Obsolete Patch removed, required Patch updated