$ git clone -n https://src.fedoraproject.org/rpms/qqc2-desktop-style.git /var/lib/mock/f40-build-790351-136506/root/chroot_tmpdir/scmroot/qqc2-desktop-style
Cloning into '/var/lib/mock/f40-build-790351-136506/root/chroot_tmpdir/scmroot/qqc2-desktop-style'...
$ git fetch origin bdea7c3213bce59bd8a3d3e33ee1b8d3b09c8ff6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qqc2-desktop-style
 * [new ref]         bdea7c3213bce59bd8a3d3e33ee1b8d3b09c8ff6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdea7c3 5.115.0