$ git clone -n https://src.fedoraproject.org/rpms/ghc-semigroups.git /var/lib/mock/f40-build-1998305-44227/root/chroot_tmpdir/scmroot/ghc-semigroups
Cloning into '/var/lib/mock/f40-build-1998305-44227/root/chroot_tmpdir/scmroot/ghc-semigroups'...
$ git fetch origin 5b2ea5f7622bec867e148893516234472a0bccb3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-semigroups
 * [new ref]         5b2ea5f7622bec867e148893516234472a0bccb3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b2ea5f bump release