$ git clone -n https://src.fedoraproject.org/rpms/stellarium.git /var/lib/mock/f40-build-781355-131566/root/chroot_tmpdir/scmroot/stellarium
Cloning into '/var/lib/mock/f40-build-781355-131566/root/chroot_tmpdir/scmroot/stellarium'...
$ git fetch origin 8aea994883f1db4dc3a12b1759761e3cc9bb3e91:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stellarium
 * [new ref]         8aea994883f1db4dc3a12b1759761e3cc9bb3e91 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8aea994 Rebuild (qt6)