$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtwebview.git /var/lib/mock/f39-build-2277004-55189/root/chroot_tmpdir/scmroot/qt5-qtwebview
Cloning into '/var/lib/mock/f39-build-2277004-55189/root/chroot_tmpdir/scmroot/qt5-qtwebview'...
$ git fetch origin d3d438d485d94747da7cd38927f117ee06a68531:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtwebview
 * [new ref]         d3d438d485d94747da7cd38927f117ee06a68531 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3d438d 5.15.12