$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtdeclarative.git /var/lib/mock/f38-build-side-42-init-devel-1035525-29746/root/chroot_tmpdir/scmroot/qt6-qtdeclarative
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1035525-29746/root/chroot_tmpdir/scmroot/qt6-qtdeclarative'...
$ git fetch origin cdfa08b0cb41bf115f3d4be1060a791f8677a285:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtdeclarative
 * [new ref]         cdfa08b0cb41bf115f3d4be1060a791f8677a285 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cdfa08b 6.5.2