$ git clone -n https://src.fedoraproject.org/rpms/greenboot-rs.git /var/lib/mock/f45-build-39695-750/root/chroot_tmpdir/scmroot/greenboot-rs
Cloning into '/var/lib/mock/f45-build-39695-750/root/chroot_tmpdir/scmroot/greenboot-rs'...
$ git fetch origin 7da94347a57b1f2a03c97f9631ef74c10003a625:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/greenboot-rs
 * [new ref]         7da94347a57b1f2a03c97f9631ef74c10003a625 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7da9434 Remove greenboot-rs-0.16.2-vendor-patched.tar.xz