$ git clone -n https://src.fedoraproject.org/rpms/rust-quanta.git /var/lib/mock/f45-build-44173-811/root/chroot_tmpdir/scmroot/rust-quanta
Cloning into '/var/lib/mock/f45-build-44173-811/root/chroot_tmpdir/scmroot/rust-quanta'...
$ git fetch origin 2cf012ccc3c1c108b28fd4a5f7829cf67328f2bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quanta
 * [new ref]         2cf012ccc3c1c108b28fd4a5f7829cf67328f2bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cf012c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild