$ git clone -n https://src.fedoraproject.org/rpms/kdeplasma-addons.git /var/lib/mock/f41-build-824544-154178/root/chroot_tmpdir/scmroot/kdeplasma-addons
Cloning into '/var/lib/mock/f41-build-824544-154178/root/chroot_tmpdir/scmroot/kdeplasma-addons'...
$ git fetch origin c3e76a4cac8feadc86b01291d87fc1c6a91b7fa4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdeplasma-addons
 * [new ref]         c3e76a4cac8feadc86b01291d87fc1c6a91b7fa4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3e76a4 rebuild