$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtgrpc.git /var/lib/mock/f40-build-786456-134293/root/chroot_tmpdir/scmroot/qt6-qtgrpc
Cloning into '/var/lib/mock/f40-build-786456-134293/root/chroot_tmpdir/scmroot/qt6-qtgrpc'...
$ git fetch origin 2ef2038c4456a050b7a198e06725671ccc311624:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtgrpc
 * [new ref]         2ef2038c4456a050b7a198e06725671ccc311624 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ef2038 6.6.2