$ git clone -n https://src.fedoraproject.org/rpms/ghc-language-java.git /var/lib/mock/f45-build-10465-418/root/chroot_tmpdir/scmroot/ghc-language-java
Cloning into '/var/lib/mock/f45-build-10465-418/root/chroot_tmpdir/scmroot/ghc-language-java'...
$ git fetch origin e663bc0338fcb2eaa14484f882fc1aa1d14de6cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-language-java
 * [new ref]         e663bc0338fcb2eaa14484f882fc1aa1d14de6cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e663bc0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild