$ git clone -n https://src.fedoraproject.org/rpms/ghc-generics-sop.git /var/lib/mock/f41-build-838088-159539/root/chroot_tmpdir/scmroot/ghc-generics-sop
Cloning into '/var/lib/mock/f41-build-838088-159539/root/chroot_tmpdir/scmroot/ghc-generics-sop'...
$ git fetch origin 07af52ffb390a876097aa2043bec37ec764a9338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-generics-sop
 * [new ref]         07af52ffb390a876097aa2043bec37ec764a9338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07af52f bump base bound