$ git clone -n https://src.fedoraproject.org/rpms/barrage.git /var/lib/mock/f39-build-1494939-34543/root/chroot_tmpdir/scmroot/barrage
Cloning into '/var/lib/mock/f39-build-1494939-34543/root/chroot_tmpdir/scmroot/barrage'...
$ git fetch origin 0c111bf2f984644add14511654c4917b6357a151:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/barrage
 * [new ref]         0c111bf2f984644add14511654c4917b6357a151 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c111bf Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild