$ git clone -n https://src.fedoraproject.org/rpms/ghc-QuickCheck.git /var/lib/mock/f41-build-837931-159471/root/chroot_tmpdir/scmroot/ghc-QuickCheck
Cloning into '/var/lib/mock/f41-build-837931-159471/root/chroot_tmpdir/scmroot/ghc-QuickCheck'...
$ git fetch origin f8053e3a76b77a0baa525397af89a9bb300197dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-QuickCheck
 * [new ref]         f8053e3a76b77a0baa525397af89a9bb300197dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8053e3 bump release