$ git clone -n https://src.fedoraproject.org/rpms/rust-fs2.git /var/lib/mock/f45-build-41728-785/root/chroot_tmpdir/scmroot/rust-fs2
Cloning into '/var/lib/mock/f45-build-41728-785/root/chroot_tmpdir/scmroot/rust-fs2'...
$ git fetch origin 69f23d89f4d54ddc39192b534ec68014cc78d65d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fs2
 * [new ref]         69f23d89f4d54ddc39192b534ec68014cc78d65d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69f23d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild