$ git clone -n https://src.fedoraproject.org/rpms/ghc-graphviz.git /var/lib/mock/f38-build-side-42-init-devel-1092597-30062/root/chroot_tmpdir/scmroot/ghc-graphviz
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1092597-30062/root/chroot_tmpdir/scmroot/ghc-graphviz'...
$ git fetch origin 2c52c5af3a62ebd573cbac0ad7d2704a04a2827e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-graphviz
 * [new ref]         2c52c5af3a62ebd573cbac0ad7d2704a04a2827e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c52c5a bump %autorelease baserelease to upgrade from f37