$ git clone -n https://src.fedoraproject.org/rpms/rust-standback.git /var/lib/mock/f39-build-1517215-35700/root/chroot_tmpdir/scmroot/rust-standback
Cloning into '/var/lib/mock/f39-build-1517215-35700/root/chroot_tmpdir/scmroot/rust-standback'...
$ git fetch origin 9495145feb4f33acbf26e2531bf4e10ad6913acd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-standback
 * [new ref]         9495145feb4f33acbf26e2531bf4e10ad6913acd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9495145 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild