$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openprinting-ipp-usb.git /var/lib/mock/f42-build-side-1-3498648-45963/root/chroot_tmpdir/scmroot/golang-github-openprinting-ipp-usb
Cloning into '/var/lib/mock/f42-build-side-1-3498648-45963/root/chroot_tmpdir/scmroot/golang-github-openprinting-ipp-usb'...
$ git fetch origin b363aa44e860325d8cd4dfff7767d322bb6d3c45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openprinting-ipp-usb
 * [new ref]         b363aa44e860325d8cd4dfff7767d322bb6d3c45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b363aa4 rebuilt with goipp 1.2.0