$ git clone -n https://src.fedoraproject.org/rpms/ghc-pureMD5.git /var/lib/mock/f38-build-side-42-init-devel-757232-27679/root/chroot_tmpdir/scmroot/ghc-pureMD5
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-757232-27679/root/chroot_tmpdir/scmroot/ghc-pureMD5'...
$ git fetch origin fdffc049a49604eed6a69b6368bb785733bc6174:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pureMD5
 * [new ref]         fdffc049a49604eed6a69b6368bb785733bc6174 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdffc04 Convert to %autorelease and %autochangelog