$ git clone -n https://src.fedoraproject.org/rpms/ghc-iso8601-time.git /var/lib/mock/f38-build-side-42-init-devel-778038-27878/root/chroot_tmpdir/scmroot/ghc-iso8601-time
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-778038-27878/root/chroot_tmpdir/scmroot/ghc-iso8601-time'...
$ git fetch origin 3490f8ca0ea3e41e87bcead42978f024034dc12e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-iso8601-time
 * [new ref]         3490f8ca0ea3e41e87bcead42978f024034dc12e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3490f8c Convert to %autorelease and %autochangelog