$ git clone -n https://src.fedoraproject.org/rpms/irstlm.git /var/lib/mock/f39-build-1535930-36252/root/chroot_tmpdir/scmroot/irstlm
Cloning into '/var/lib/mock/f39-build-1535930-36252/root/chroot_tmpdir/scmroot/irstlm'...
$ git fetch origin f11f020231303c62aa53458b93664333035dc7d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/irstlm
 * [new ref]         f11f020231303c62aa53458b93664333035dc7d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f11f020 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild