$ git clone -n https://src.fedoraproject.org/rpms/rust-config0.13.git /var/lib/mock/f45-build-40908-777/root/chroot_tmpdir/scmroot/rust-config0.13
Cloning into '/var/lib/mock/f45-build-40908-777/root/chroot_tmpdir/scmroot/rust-config0.13'...
$ git fetch origin 3062a025cfa868a9e2801fdf2ca33a6ff607a22b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-config0.13
 * [new ref]         3062a025cfa868a9e2801fdf2ca33a6ff607a22b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3062a02 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild