$ git clone -n https://src.fedoraproject.org/rpms/ghc-profunctors.git /var/lib/mock/f40-build-743956-111445/root/chroot_tmpdir/scmroot/ghc-profunctors
Cloning into '/var/lib/mock/f40-build-743956-111445/root/chroot_tmpdir/scmroot/ghc-profunctors'...
$ git fetch origin 2f2a803abbe827d3aa93a5600d907ca494905ddd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-profunctors
 * [new ref]         2f2a803abbe827d3aa93a5600d907ca494905ddd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f2a803 revised .cabal file