$ git clone -n https://src.fedoraproject.org/rpms/ghc-basement.git /var/lib/mock/f41-build-835781-158645/root/chroot_tmpdir/scmroot/ghc-basement
Cloning into '/var/lib/mock/f41-build-835781-158645/root/chroot_tmpdir/scmroot/ghc-basement'...
$ git fetch origin 5976c4799476c1e203d5a41f691ced0165d8e064:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-basement
 * [new ref]         5976c4799476c1e203d5a41f691ced0165d8e064 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5976c47 bump release