$ git clone -n https://src.fedoraproject.org/rpms/ghc-semigroupoids.git /var/lib/mock/f40-build-744545-111763/root/chroot_tmpdir/scmroot/ghc-semigroupoids
Cloning into '/var/lib/mock/f40-build-744545-111763/root/chroot_tmpdir/scmroot/ghc-semigroupoids'...
$ git fetch origin 10ad3f83314b18c906c9f81c68d986f1697defce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-semigroupoids
 * [new ref]         10ad3f83314b18c906c9f81c68d986f1697defce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10ad3f8 bump release