$ git clone -n https://src.fedoraproject.org/rpms/workflow.git /var/lib/mock/f41-build-744401-13343/root/chroot_tmpdir/scmroot/workflow
Cloning into '/var/lib/mock/f41-build-744401-13343/root/chroot_tmpdir/scmroot/workflow'...
$ git fetch origin f99b1546f78546efa8f824a5cb77ec9a2cec9181:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/workflow
 * [new ref]         f99b1546f78546efa8f824a5cb77ec9a2cec9181 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f99b154 Update to 0.11.4 upstream release