$ git clone -n https://src.fedoraproject.org/rpms/appeditor.git /var/lib/mock/f40-build-2649063-66828/root/chroot_tmpdir/scmroot/appeditor
Cloning into '/var/lib/mock/f40-build-2649063-66828/root/chroot_tmpdir/scmroot/appeditor'...
$ git fetch origin f289e3984a773e5d89b528e965a8edb948f2c88b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/appeditor
 * [new ref]         f289e3984a773e5d89b528e965a8edb948f2c88b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f289e39 Add developer ID in AppData (fix FTBFS with appstream 1.0.2)