$ git clone -n https://src.fedoraproject.org/rpms/plantri.git /var/lib/mock/f40-build-2632383-65864/root/chroot_tmpdir/scmroot/plantri
Cloning into '/var/lib/mock/f40-build-2632383-65864/root/chroot_tmpdir/scmroot/plantri'...
$ git fetch origin 90b5394697fbad9a10f26b52743fdea81ca55384:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plantri
 * [new ref]         90b5394697fbad9a10f26b52743fdea81ca55384 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90b5394 Version 5.4