$ git clone -n https://src.fedoraproject.org/rpms/audacity.git /var/lib/mock/f42-build-side-1-3540417-46574/root/chroot_tmpdir/scmroot/audacity
Cloning into '/var/lib/mock/f42-build-side-1-3540417-46574/root/chroot_tmpdir/scmroot/audacity'...
$ git fetch origin cefda39596658e813411005721678145798d00c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/audacity
 * [new ref]         cefda39596658e813411005721678145798d00c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cefda39 3.7.4