$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtwebengine.git /var/lib/mock/f38-build-side-42-init-devel-671812-26679/root/chroot_tmpdir/scmroot/qt6-qtwebengine
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-671812-26679/root/chroot_tmpdir/scmroot/qt6-qtwebengine'...
$ git fetch origin 0a649da59a3507b5ed30406c7292f9ff14afe6e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtwebengine
 * [new ref]         0a649da59a3507b5ed30406c7292f9ff14afe6e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a649da Fix changelog