$ git clone -n https://src.fedoraproject.org/rpms/rust-powerfmt.git /var/lib/mock/f45-build-43947-809/root/chroot_tmpdir/scmroot/rust-powerfmt
Cloning into '/var/lib/mock/f45-build-43947-809/root/chroot_tmpdir/scmroot/rust-powerfmt'...
$ git fetch origin 10acaf2662062e2ea6a2bca5ba117316698d2b69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-powerfmt
 * [new ref]         10acaf2662062e2ea6a2bca5ba117316698d2b69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10acaf2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild