$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtwebengine.git /var/lib/mock/f38-build-716337-95967/root/chroot_tmpdir/scmroot/qt6-qtwebengine
Cloning into '/var/lib/mock/f38-build-716337-95967/root/chroot_tmpdir/scmroot/qt6-qtwebengine'...
$ git fetch origin f23b1bec9a06ff61791de643c8056122c8f99d99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtwebengine
 * [new ref]         f23b1bec9a06ff61791de643c8056122c8f99d99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f23b1be Merge branch 'rawhide' into f38