$ git clone -n https://src.fedoraproject.org/rpms/python-immutabledict.git /var/lib/mock/f39-build-1694700-41162/root/chroot_tmpdir/scmroot/python-immutabledict
Cloning into '/var/lib/mock/f39-build-1694700-41162/root/chroot_tmpdir/scmroot/python-immutabledict'...
$ git fetch origin 7fe0f867876d9ab4d3247c01456023db2636f7f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-immutabledict
 * [new ref]         7fe0f867876d9ab4d3247c01456023db2636f7f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fe0f86 Update to v3.0.0