$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-api-data.git /var/lib/mock/f39-build-1713206-41228/root/chroot_tmpdir/scmroot/ghc-http-api-data
Cloning into '/var/lib/mock/f39-build-1713206-41228/root/chroot_tmpdir/scmroot/ghc-http-api-data'...
$ git fetch origin 45746570f7afcb4af32289c04b28f55b8bf3b836:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-api-data
 * [new ref]         45746570f7afcb4af32289c04b28f55b8bf3b836 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4574657 https://hackage.haskell.org/package/http-api-data-0.5/changelog