$ git clone -n https://src.fedoraproject.org/rpms/ghc-comonad.git /var/lib/mock/f39-build-2115224-50681/root/chroot_tmpdir/scmroot/ghc-comonad
Cloning into '/var/lib/mock/f39-build-2115224-50681/root/chroot_tmpdir/scmroot/ghc-comonad'...
$ git fetch origin 893741bf0259698756f2ff086f43abe928243b4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-comonad
 * [new ref]         893741bf0259698756f2ff086f43abe928243b4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 893741b bump release