$ git clone -n https://src.fedoraproject.org/rpms/flamerobin.git /var/lib/mock/f40-build-2235636-53445/root/chroot_tmpdir/scmroot/flamerobin
Cloning into '/var/lib/mock/f40-build-2235636-53445/root/chroot_tmpdir/scmroot/flamerobin'...
$ git fetch origin 0e336f754ac2616fd47e275aa81ba345cc09ba84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flamerobin
 * [new ref]         0e336f754ac2616fd47e275aa81ba345cc09ba84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e336f7 New upstream (#2242257)