$ git clone -n https://src.fedoraproject.org/rpms/ghc-http2.git /var/lib/mock/f45-build-10422-416/root/chroot_tmpdir/scmroot/ghc-http2
Cloning into '/var/lib/mock/f45-build-10422-416/root/chroot_tmpdir/scmroot/ghc-http2'...
$ git fetch origin 468f019b8ebad7b1bc605afe64ee6925650c0053:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http2
 * [new ref]         468f019b8ebad7b1bc605afe64ee6925650c0053 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 468f019 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild