$ git clone -n https://src.fedoraproject.org/rpms/rust-selectors.git /var/lib/mock/f45-build-44752-816/root/chroot_tmpdir/scmroot/rust-selectors
Cloning into '/var/lib/mock/f45-build-44752-816/root/chroot_tmpdir/scmroot/rust-selectors'...
$ git fetch origin fe95f68c99eebe115e31856ce664afc8180f80a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-selectors
 * [new ref]         fe95f68c99eebe115e31856ce664afc8180f80a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe95f68 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild