$ git clone -n https://src.fedoraproject.org/rpms/python-qt5.git /var/lib/mock/f42-build-side-1-3512280-46067/root/chroot_tmpdir/scmroot/python-qt5
Cloning into '/var/lib/mock/f42-build-side-1-3512280-46067/root/chroot_tmpdir/scmroot/python-qt5'...
$ git fetch origin f8268ef2ae01509a80702cb2f6c73a4752473924:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-qt5
 * [new ref]         f8268ef2ae01509a80702cb2f6c73a4752473924 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8268ef Move -webkit obsoletes to python3-qt5 package