$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtdeclarative.git /var/lib/mock/f41-build-808287-145775/root/chroot_tmpdir/scmroot/qt6-qtdeclarative
Cloning into '/var/lib/mock/f41-build-808287-145775/root/chroot_tmpdir/scmroot/qt6-qtdeclarative'...
$ git fetch origin 9e85cd4c25cc61b1e8f02aef78f44b655d4e43c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtdeclarative
 * [new ref]         9e85cd4c25cc61b1e8f02aef78f44b655d4e43c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e85cd4 Rebuild for updated qtbase private api tag