$ git clone -n https://src.fedoraproject.org/rpms/rust-cfonts.git /var/lib/mock/f45-build-40741-775/root/chroot_tmpdir/scmroot/rust-cfonts
Cloning into '/var/lib/mock/f45-build-40741-775/root/chroot_tmpdir/scmroot/rust-cfonts'...
$ git fetch origin 61bf0cd8bfaad75709d22f6bd09bf500a3107281:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cfonts
 * [new ref]         61bf0cd8bfaad75709d22f6bd09bf500a3107281 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61bf0cd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild