$ git clone -n https://src.fedoraproject.org/rpms/ghc-language-c99-simple.git /var/lib/mock/f45-build-10477-418/root/chroot_tmpdir/scmroot/ghc-language-c99-simple
Cloning into '/var/lib/mock/f45-build-10477-418/root/chroot_tmpdir/scmroot/ghc-language-c99-simple'...
$ git fetch origin 3854b8bd6099b55636efb2c600314282512e15dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-language-c99-simple
 * [new ref]         3854b8bd6099b55636efb2c600314282512e15dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3854b8b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild