$ git clone -n https://src.fedoraproject.org/rpms/boswars.git /var/lib/mock/f39-build-1524749-36035/root/chroot_tmpdir/scmroot/boswars
Cloning into '/var/lib/mock/f39-build-1524749-36035/root/chroot_tmpdir/scmroot/boswars'...
$ git fetch origin 1815977ead7910042b268704e34face298118b5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/boswars
 * [new ref]         1815977ead7910042b268704e34face298118b5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1815977 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild