$ git clone -n https://src.fedoraproject.org/rpms/rust-quickcheck_macros.git /var/lib/mock/f45-build-44184-811/root/chroot_tmpdir/scmroot/rust-quickcheck_macros
Cloning into '/var/lib/mock/f45-build-44184-811/root/chroot_tmpdir/scmroot/rust-quickcheck_macros'...
$ git fetch origin e1fca7d8e0091bf4fe55c9ff0fdaa8f37b4657bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quickcheck_macros
 * [new ref]         e1fca7d8e0091bf4fe55c9ff0fdaa8f37b4657bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1fca7d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild