$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtwebview.git /var/lib/mock/f41-build-860595-169005/root/chroot_tmpdir/scmroot/qt5-qtwebview
Cloning into '/var/lib/mock/f41-build-860595-169005/root/chroot_tmpdir/scmroot/qt5-qtwebview'...
$ git fetch origin ec8c094df0f6227c1089408780565d9f42270697:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtwebview
 * [new ref]         ec8c094df0f6227c1089408780565d9f42270697 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec8c094 5.15.15