$ git clone -n https://src.fedoraproject.org/rpms/rust-powerfmt-macros.git /var/lib/mock/f40-build-2073609-49358/root/chroot_tmpdir/scmroot/rust-powerfmt-macros
Cloning into '/var/lib/mock/f40-build-2073609-49358/root/chroot_tmpdir/scmroot/rust-powerfmt-macros'...
$ git fetch origin 298cef3116bcc65c88039484653cc21f32af3c27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-powerfmt-macros
 * [new ref]         298cef3116bcc65c88039484653cc21f32af3c27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 298cef3 Initial import (#2244275)