$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtwebchannel.git /var/lib/mock/f45-build-34076-677/root/chroot_tmpdir/scmroot/qt5-qtwebchannel
Cloning into '/var/lib/mock/f45-build-34076-677/root/chroot_tmpdir/scmroot/qt5-qtwebchannel'...
$ git fetch origin 79578c8f722da84a2815ad13de07f99daca195d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtwebchannel
 * [new ref]         79578c8f722da84a2815ad13de07f99daca195d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79578c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild