$ git clone -n https://src.fedoraproject.org/rpms/ghc-uuid.git /var/lib/mock/f40-build-2213186-52298/root/chroot_tmpdir/scmroot/ghc-uuid
Cloning into '/var/lib/mock/f40-build-2213186-52298/root/chroot_tmpdir/scmroot/ghc-uuid'...
$ git fetch origin 19aeb35a0aacef3055cf7a759962fa6170da97bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-uuid
 * [new ref]         19aeb35a0aacef3055cf7a759962fa6170da97bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19aeb35 bump release