$ git clone -n https://src.fedoraproject.org/rpms/perl-RRD-Simple.git /var/lib/mock/f39-build-1736800-41271/root/chroot_tmpdir/scmroot/perl-RRD-Simple
Cloning into '/var/lib/mock/f39-build-1736800-41271/root/chroot_tmpdir/scmroot/perl-RRD-Simple'...
$ git fetch origin c6e2e6710880cc8ca044ac376a6015a46970a0b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-RRD-Simple
 * [new ref]         c6e2e6710880cc8ca044ac376a6015a46970a0b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6e2e67 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild