$ git clone -n https://src.fedoraproject.org/rpms/minetest.git /var/lib/mock/f39-build-2033107-47748/root/chroot_tmpdir/scmroot/minetest
Cloning into '/var/lib/mock/f39-build-2033107-47748/root/chroot_tmpdir/scmroot/minetest'...
$ git fetch origin 8b4f9c65fff73d9655a427a87b954cd22f3ef783:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/minetest
 * [new ref]         8b4f9c65fff73d9655a427a87b954cd22f3ef783 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b4f9c6 5.8.0