$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openprinting-ipp-usb.git /var/lib/mock/f42-build-3426583-45197/root/chroot_tmpdir/scmroot/golang-github-openprinting-ipp-usb
Cloning into '/var/lib/mock/f42-build-3426583-45197/root/chroot_tmpdir/scmroot/golang-github-openprinting-ipp-usb'...
$ git fetch origin 6ed781982040dfd4b239025645de243d59d9371e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openprinting-ipp-usb
 * [new ref]         6ed781982040dfd4b239025645de243d59d9371e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ed7819 0.9.30 (fedora#2353036)