$ git clone -n https://src.fedoraproject.org/rpms/mypaint2-brushes.git /var/lib/mock/f39-build-1462251-33316/root/chroot_tmpdir/scmroot/mypaint2-brushes
Cloning into '/var/lib/mock/f39-build-1462251-33316/root/chroot_tmpdir/scmroot/mypaint2-brushes'...
$ git fetch origin 7e67225f3c80841ca287aae5255ae8a77c01d63e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mypaint2-brushes
 * [new ref]         7e67225f3c80841ca287aae5255ae8a77c01d63e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e67225 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild