$ git clone -n https://src.fedoraproject.org/rpms/ghc-profunctors.git /var/lib/mock/f38-build-side-42-init-devel-955562-28786/root/chroot_tmpdir/scmroot/ghc-profunctors
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-955562-28786/root/chroot_tmpdir/scmroot/ghc-profunctors'...
$ git fetch origin c93b4a77c2fd5c9af710de32360ece3487fe18e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-profunctors
 * [new ref]         c93b4a77c2fd5c9af710de32360ece3487fe18e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c93b4a7 Convert to %autorelease and %autochangelog