$ git clone -n https://src.fedoraproject.org/rpms/rust-graphene-rs0.21.git /var/lib/mock/f45-build-42092-788/root/chroot_tmpdir/scmroot/rust-graphene-rs0.21
Cloning into '/var/lib/mock/f45-build-42092-788/root/chroot_tmpdir/scmroot/rust-graphene-rs0.21'...
$ git fetch origin 2af72f0481faf32192cb1fcfe7bb7772ebd4b54b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-graphene-rs0.21
 * [new ref]         2af72f0481faf32192cb1fcfe7bb7772ebd4b54b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2af72f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild