$ git clone -n https://src.fedoraproject.org/rpms/ghc-uri.git /var/lib/mock/f45-build-10903-425/root/chroot_tmpdir/scmroot/ghc-uri
Cloning into '/var/lib/mock/f45-build-10903-425/root/chroot_tmpdir/scmroot/ghc-uri'...
$ git fetch origin c8c25bac8f0f9cbbbf21b5b58429bcb6de02210d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-uri
 * [new ref]         c8c25bac8f0f9cbbbf21b5b58429bcb6de02210d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8c25ba Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild