$ git clone -n https://src.fedoraproject.org/rpms/ghc-uglymemo.git /var/lib/mock/f38-build-side-42-init-devel-947687-28779/root/chroot_tmpdir/scmroot/ghc-uglymemo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-947687-28779/root/chroot_tmpdir/scmroot/ghc-uglymemo'...
$ git fetch origin 152ab02750507101600ad391ec0af668ef4d4744:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-uglymemo
 * [new ref]         152ab02750507101600ad391ec0af668ef4d4744 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 152ab02 Convert to %autorelease and %autochangelog