$ git clone -n https://src.fedoraproject.org/rpms/obs-service-rust2rpm.git /var/lib/mock/f40-build-2013274-45865/root/chroot_tmpdir/scmroot/obs-service-rust2rpm
Cloning into '/var/lib/mock/f40-build-2013274-45865/root/chroot_tmpdir/scmroot/obs-service-rust2rpm'...
$ git fetch origin 8f3c52deb17272ee1e04f8d6eff4c31ff600ca05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-service-rust2rpm
 * [new ref]         8f3c52deb17272ee1e04f8d6eff4c31ff600ca05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f3c52d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild