$ git clone -n https://src.fedoraproject.org/rpms/ghc-binary-shared.git /var/lib/mock/f39-build-1507025-35221/root/chroot_tmpdir/scmroot/ghc-binary-shared
Cloning into '/var/lib/mock/f39-build-1507025-35221/root/chroot_tmpdir/scmroot/ghc-binary-shared'...
$ git fetch origin 110668a1a2aabba5353b18be60db09aec99b3a4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-binary-shared
 * [new ref]         110668a1a2aabba5353b18be60db09aec99b3a4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 110668a bump release