$ git clone -n https://src.fedoraproject.org/rpms/ghc-wai-extra.git /var/lib/mock/f38-build-side-42-init-devel-757515-27679/root/chroot_tmpdir/scmroot/ghc-wai-extra
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-757515-27679/root/chroot_tmpdir/scmroot/ghc-wai-extra'...
$ git fetch origin 6695e44094d4b61505e43c5fdda536912e36f848:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-wai-extra
 * [new ref]         6695e44094d4b61505e43c5fdda536912e36f848 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6695e44 Convert to %autorelease and %autochangelog